Skip Headers
Oracle® Streams Concepts and Administration
11
g
Release 2 (11.2)
Part Number E17069-07
Home
Book List
Index
Master Index
Contact Us
Next
PDF
·
Mobi
·
ePub
Contents
List of Figures
List of Tables
Title and Copyright Information
Preface
Audience
Documentation Accessibility
Related Documents
Conventions
What's New in Oracle Streams?
Oracle Database 11
g
Release 2 (11.2) New Features in Oracle Streams
Oracle Database 11
g
Release 1 (11.1) New Features in Oracle Streams
Part I Essential Oracle Streams Concepts
1
Introduction to Oracle Streams
Overview of Oracle Streams
What Can Oracle Streams Do?
Capture Messages at a Database
Stage Messages in a Queue
Propagate Messages from One Queue to Another
Consume Messages
Detect and Resolve Conflicts
Transform Messages
Track Messages with Oracle Streams Tags
Share Information with Non-Oracle Databases
What Are the Uses of Oracle Streams?
Data Replication
Data Warehouse Loading
Database Availability During Upgrade and Maintenance Operations
Message Queuing
Event Management and Notification
Data Protection
Sample Oracle Streams Configurations
Sample Hub-and-Spoke Replication Configuration
Sample Replication Configuration with Downstream Capture
Sample Replication Configuration That Uses Synchronous Captures
Sample N-Way Replication Configuration
Sample Configuration That Performs Capture and Apply in a Single Database
Sample Messaging Configuration
Oracle Streams Documentation Roadmap
Documentation for Learning About Oracle Streams
Documentation About Setting Up or Extending an Oracle Streams Environment
Documentation About Managing an Oracle Streams Environment
Documentation About Monitoring an Oracle Streams Environment
Documentation About Using Oracle Streams for Upgrade and Maintenance
2
Oracle Streams Information Capture
Ways to Capture Information with Oracle Streams
Implicit Capture
Capture Processes
Synchronous Captures
Explicit Capture
Types of Information Captured with Oracle Streams
Logical Change Records (LCRs)
Row LCRs
DDL LCRs
Extra Information in LCRs
User Messages
Summary of Information Capture Options with Oracle Streams
Instantiation in an Oracle Streams Environment
Implicit Capture with an Oracle Streams Capture Process
Introduction to Capture Processes
Capture Process Rules
Data Types Captured by Capture Processes
Types of DML Changes Captured by Capture Processes
Supplemental Logging in an Oracle Streams Environment
Local Capture and Downstream Capture
Local Capture
Downstream Capture
SCN Values Related to a Capture Process
Captured SCN and Applied SCN
First SCN and Start SCN
Oracle Streams Capture Processes and RESTRICTED SESSION
Capture Process Subcomponents
Capture User
Capture Process States
Capture Process Parameters
Persistent Capture Process Status Upon Database Restart
Implicit Capture with Synchronous Capture
Introduction to Synchronous Capture
Synchronous Capture and Queues
Synchronous Capture Rules
Data Types Captured by Synchronous Capture
Types of DML Changes Captured by Synchronous Capture
Capture User for Synchronous Capture
Multiple Synchronous Captures in a Single Database
Explicit Capture by Applications
Types of Messages That Can Be Enqueued Explicitly
User Messages
Logical Change Records (LCRs) and Messaging
Enqueue Features
3
Oracle Streams Staging and Propagation
Introduction to Message Staging and Propagation
Queues
ANYDATA Queues and Typed Queues
Persistent Queues and Buffered Queues
Queues and Oracle Streams Clients
Message Propagation Between Queues
Propagation Rules
Queue-to-Queue Propagations
Ensured Message Delivery
Directed Networks
Queue Forwarding and Apply Forwarding
4
Oracle Streams Information Consumption
Overview of Information Consumption with Oracle Streams
Ways to Consume Information with Oracle Streams
Implicit Consumption
Explicit Consumption
Types of Information Consumed with Oracle Streams
Captured LCRs
Persistent LCRs
Buffered LCRs
Persistent User Messages
Buffered User Messages
Summary of Information Consumption Options
Implicit Consumption with an Apply Process
Introduction to the Apply Process
Apply Process Rules
Types of Messages That Can Be Processed with an Apply Process
Message Processing Options for an Apply Process
DML Handlers
Error Handlers
DDL Handlers
Message Handlers
Precommit Handlers
Considerations for Apply Handlers
Summary of Message Processing Options
The Source of Messages Applied by an Apply Process
Data Types Applied
Automatic Data Type Conversion During Apply
Automatic Trimming of Character Data Types During Apply
Automatic Conversion and LOB Data Types
SQL Generation
Interfaces for Performing SQL Generation
SQL Generation Formats
SQL Generation and Data Types
SQL Generation and Character Sets
Sample Generated SQL Statements
Oracle Streams Apply Processes and RESTRICTED SESSION
Apply Process Subcomponents
Reader Server States
Coordinator Process States
Apply Server States
Apply User
Apply Process Parameters
Persistent Apply Process Status Upon Database Restart
The Error Queue
Explicit Consumption with a Messaging Client
Explicit Consumption with Manual Dequeue
5
How Rules Are Used in Oracle Streams
Overview of How Rules Are Used in Oracle Streams
Rule Sets and Rule Evaluation of Messages
Oracle Streams Client with No Rule Set
Oracle Streams Client with a Positive Rule Set Only
Oracle Streams Client with a Negative Rule Set Only
Oracle Streams Client with Both a Positive and a Negative Rule Set
Oracle Streams Client with One or More Empty Rule Sets
Summary of Rule Sets and Oracle Streams Client Behavior
System-Created Rules
Global Rules
Global Rules Example
System-Created Global Rules Avoid Empty Rule Conditions Automatically
Schema Rules
Schema Rule Example
Table Rules
Table Rules Example
Subset Rules
Subset Rules Example
Row Migration and Subset Rules
Subset Rules and Supplemental Logging
Guidelines for Using Subset Rules
Message Rules
Message Rule Example
System-Created Rules and Negative Rule Sets
Negative Rule Set Example
System-Created Rules with Added User-Defined Conditions
6
Rule-Based Transformations
Declarative Rule-Based Transformations
Custom Rule-Based Transformations
Custom Rule-Based Transformations and Action Contexts
Required Privileges for Custom Rule-Based Transformations
Rule-Based Transformations and Oracle Streams Clients
Rule-Based Transformations and Capture Processes
Rule-Based Transformation Errors During Capture by a Capture Process
Rule-Based Transformations and Synchronous Captures
Rule-Based Transformations and Errors During Capture by a Synchronous Capture
Rule-Based Transformations and Propagations
Rule-Based Transformation Errors During Propagation
Rule-Based Transformations and an Apply Process
Rule-Based Transformation Errors During Apply Process Dequeue
Apply Errors on Transformed Messages
Rule-Based Transformations and a Messaging Client
Rule-Based Transformation Errors During Messaging Client Dequeue
Multiple Rule-Based Transformations
Transformation Ordering
Declarative Rule-Based Transformation Ordering
Default Declarative Transformation Ordering
User-Specified Declarative Transformation Ordering
Considerations for Rule-Based Transformations
Part II Advanced Oracle Streams Concepts
7
Advanced Capture Process Concepts
Multiple Capture Processes in a Single Database
Capture Process Checkpoints
Required Checkpoint SCN
Maximum Checkpoint SCN
Checkpoint Retention Time
A New First SCN Value and Purged LogMiner Data Dictionary Information
ARCHIVELOG Mode and a Capture Process
Capture Process Creation
The LogMiner Data Dictionary for a Capture Process
Scenario Illustrating Why a Capture Process Needs a LogMiner Data Dictionary
Multiple Capture Processes for the Same Source Database
The Oracle Streams Data Dictionary
Capture Process Rule Evaluation
8
Advanced Queue Concepts
Secure Queues
Secure Queues and the SET_UP_QUEUE Procedure
Secure Queues and Oracle Streams Clients
Transactional and Nontransactional Queues
Commit-Time Queues
When to Use Commit-Time Queues
Transactional Dependency Ordering During Dequeue
Consistent Browse of Messages in a Queue
How Commit-Time Queues Work
9
Advanced Propagation Concepts
Propagation Jobs
Propagation Scheduling and Oracle Streams Propagations
Propagation Jobs and RESTRICTED SESSION
Oracle Streams Data Dictionary for Propagations
Binary File Propagation
10
Advanced Apply Process Concepts
Apply Process Creation
Apply Processes and Dependencies
How Dependent Transactions Are Applied
Row LCR Ordering During Apply
Dependencies and Constraints
Dependency Detection, Rule-Based Transformations, and Apply Handlers
Virtual Dependency Definitions
Value Dependency
Object Dependency
Barrier Transactions
Considerations for Applying DML Changes to Tables
Constraints and Applying DML Changes to Tables
Substitute Key Columns
Apply Process Behavior for Column Discrepancies
Missing Columns at the Destination Database
Extra Columns at the Destination Database
Column Data Type Mismatch
Conflict Resolution and an Apply Process
Handlers and Row LCR Processing
No Relevant Handlers
Relevant Update Conflict Handler
DML Handler But No Relevant Update Conflict Handler
DML Handler And a Relevant Update Conflict Handler
Statement DML Handler and Procedure DML Handler
Error Handler But No Relevant Update Conflict Handler
Error Handler And a Relevant Update Conflict Handler
Statement DML Handler and Relevant Error Handler
Statement DML Handler, Error Handler, and Relevant Update Conflict Handler
Considerations for Applying DDL Changes
System-Generated Names
CREATE TABLE AS SELECT Statements
DML Statements within DDL Statements
The DDL Statement Contains Derived Values
The DDL Statement Fires DML Triggers
Instantiation SCN and Ignore SCN for an Apply Process
The Oldest SCN for an Apply Process
Low-Watermark and High-Watermark for an Apply Process
Apply Processes and Triggers
Trigger Firing Property
Apply Processes and Triggers Created with the ON SCHEMA Clause
Oracle Streams Data Dictionary for an Apply Process
Multiple Apply Processes in a Single Database
11
Advanced Rule Concepts
The Components of a Rule
Rule Condition
Variables in Rule Conditions
Simple Rule Conditions
Rule Evaluation Context
Explicit and Implicit Variables
Evaluation Context Association with Rule Sets and Rules
Evaluation Function
Rule Action Context
Rule Set Evaluation
Rule Set Evaluation Process
Partial Evaluation
Database Objects and Privileges Related to Rules
Privileges for Creating Database Objects Related to Rules
Privileges for Altering Database Objects Related to Rules
Privileges for Dropping Database Objects Related to Rules
Privileges for Placing Rules in a Rule Set
Privileges for Evaluating a Rule Set
Privileges for Using an Evaluation Context
Evaluation Contexts Used in Oracle Streams
Evaluation Context for Global, Schema, Table, and Subset Rules
Evaluation Contexts for Message Rules
Oracle Streams and Event Contexts
Oracle Streams and Action Contexts
Purposes of Action Contexts in Oracle Streams
Internal LCR Transformations in Subset Rules
Information About Declarative Rule-Based Transformations
Custom Rule-Based Transformations
Execution Directives for Messages During Apply
Enqueue Destinations for Messages During Apply
Ensure That Only One Rule Can Evaluate to TRUE for a Particular Rule Condition
Action Context Considerations for Schema and Global Rules
User-Created Rules, Rule Sets, and Evaluation Contexts
User-Created Rules and Rule Sets
Rule Conditions for Specific Types of Operations
Rule Conditions that Instruct Oracle Streams Clients to Discard Unsupported LCRs
Complex Rule Conditions
Rule Conditions with Undefined Variables that Evaluate to NULL
Variables as Function Parameters in Rule Conditions
User-Created Evaluation Contexts
12
Combined Capture and Apply Optimization
About Combined Capture and Apply Optimization
Combined Capture and Apply Requirements
How to Use Combined Capture and Apply
How to Determine Whether Combined Capture and Apply Is Being Used
Combined Capture and Apply and Point-in-Time Recovery
13
Oracle Streams High Availability Environments
Overview of Oracle Streams High Availability Environments
Protection from Failures
Oracle Streams Replica Database
Updates at the Replica Database
Heterogeneous Platform Support
Multiple Character Sets
Mining the Online Redo Logs to Minimize Latency
Fast Failover
Single Capture for Multiple Destinations
When Not to Use Oracle Streams
Application-Maintained Copies
Best Practices for Oracle Streams High Availability Environments
Configuring Oracle Streams for High Availability
Directly Connecting Every Database to Every Other Database
Creating Hub-and-Spoke Configurations
Local or Downstream Capture with Oracle Streams Capture Processes
Recovering from Failures
Automatic Capture Process Restart After a Failover
Database Links Reestablishment After a Failover
Propagation Job Restart After a Failover
Automatic Apply Process Restart After a Failover
Part III Oracle Streams Administration
14
Introduction to Oracle Streams Administration
Oracle-Supplied PL/SQL Packages
DBMS_APPLY_ADM Package
DBMS_CAPTURE_ADM Package
DBMS_COMPARISON Package
DBMS_PROPAGATION_ADM Package
DBMS_RULE Package
DBMS_RULE_ADM Package
DBMS_STREAMS Package
DBMS_STREAMS_ADM Package
DBMS_STREAMS_ADVISOR_ADM Package
DBMS_STREAMS_AUTH Package
DBMS_STREAMS_HANDLER_ADM Package
DBMS_STREAMS_MESSAGING Package
DBMS_STREAMS_TABLESPACE_ADM Package
UTL_SPADV Package
Oracle Streams Data Dictionary Views
Oracle Streams Tool in Oracle Enterprise Manager
15
Managing Oracle Streams Implicit Capture
Managing a Capture Process
Starting a Capture Process
Stopping a Capture Process
Managing the Rule Set for a Capture Process
Specifying a Rule Set for a Capture Process
Adding Rules to a Rule Set for a Capture Process
Removing a Rule from a Rule Set for a Capture Process
Removing a Rule Set for a Capture Process
Setting a Capture Process Parameter
Setting the Capture User for a Capture Process
Managing the Checkpoint Retention Time for a Capture Process
Setting the Checkpoint Retention Time for a Capture Process to a New Value
Setting the Checkpoint Retention Time for a Capture Process to Infinite
Adding an Archived Redo Log File to a Capture Process Explicitly
Setting the First SCN for an Existing Capture Process
Setting the Start SCN for an Existing Capture Process
Specifying Whether Downstream Capture Uses a Database Link
Dropping a Capture Process
Managing a Synchronous Capture
Managing the Rule Set for a Synchronous Capture
Specifying a Rule Set for a Synchronous Capture
Adding Rules to a Rule Set for a Synchronous Capture
Removing a Rule from a Rule Set for a Synchronous Capture
Setting the Capture User for a Synchronous Capture
Dropping a Synchronous Capture
Managing Extra Attributes in Captured LCRs
Including Extra Attributes in Implicitly Captured LCRs
Excluding Extra Attributes from Implicitly Captured LCRs
Switching From a Capture Process to a Synchronous Capture
Switching from a Synchronous Capture to a Capture Process
16
Managing Staging and Propagation
Managing Queues
Enabling a User to Perform Operations on a Secure Queue
Disabling a User from Performing Operations on a Secure Queue
Removing a Queue
Managing Oracle Streams Propagations and Propagation Jobs
Starting a Propagation
Stopping a Propagation
Altering the Schedule of a Propagation Job
Altering the Schedule of a Propagation Job for a Queue-to-Queue Propagation
Altering the Schedule of a Propagation Job for a Queue-to-Dblink Propagation
Specifying the Rule Set for a Propagation
Specifying a Positive Rule Set for a Propagation
Specifying a Negative Rule Set for a Propagation
Adding Rules to the Rule Set for a Propagation
Adding Rules to the Positive Rule Set for a Propagation
Adding Rules to the Negative Rule Set for a Propagation
Removing a Rule from the Rule Set for a Propagation
Removing a Rule Set for a Propagation
Dropping a Propagation
17
Managing Oracle Streams Information Consumption
Starting an Apply Process
Stopping an Apply Process
Managing the Rule Set for an Apply Process
Specifying the Rule Set for an Apply Process
Specifying a Positive Rule Set for an Apply Process
Specifying a Negative Rule Set for an Apply Process
Adding Rules to the Rule Set for an Apply Process
Adding Rules to the Positive Rule Set for an Apply Process
Adding Rules to the Negative Rule Set for an Apply Process
Removing a Rule from the Rule Set for an Apply Process
Removing a Rule Set for an Apply Process
Setting an Apply Process Parameter
Setting the Apply User for an Apply Process
Managing a DML Handler
Managing a Statement DML Handler
Creating a Statement DML Handler and Adding It to an Apply Process
Adding Statements to a Statement DML Handler
Modifying a Statement in a Statement DML Handler
Removing Statements from a Statement DML Handler
Removing a Statement DML Handler from an Apply Process
Dropping a Statement DML Handler
Managing a Procedure DML Handler
Creating a Procedure DML Handler
Setting a Procedure DML Handler
Unsetting a Procedure DML Handler
Managing a DDL Handler
Creating a DDL Handler for an Apply Process
Setting the DDL Handler for an Apply Process
Removing the DDL Handler for an Apply Process
Managing the Message Handler for an Apply Process
Setting the Message Handler for an Apply Process
Unsetting the Message Handler for an Apply Process
Managing the Precommit Handler for an Apply Process
Creating a Precommit Handler for an Apply Process
Setting the Precommit Handler for an Apply Process
Unsetting the Precommit Handler for an Apply Process
Specifying That Apply Processes Enqueue Messages
Setting the Destination Queue for Messages that Satisfy a Rule
Removing the Destination Queue Setting for a Rule
Specifying Execute Directives for Apply Processes
Specifying that Messages that Satisfy a Rule Are Not Executed
Specifying that Messages that Satisfy a Rule Are Executed
Managing an Error Handler
Creating an Error Handler
Setting an Error Handler
Unsetting an Error Handler
Managing Apply Errors
Retrying Apply Error Transactions
Retrying a Specific Apply Error Transaction
Retrying All Error Transactions for an Apply Process
Deleting Apply Error Transactions
Deleting a Specific Apply Error Transaction
Deleting All Error Transactions for an Apply Process
Managing the Substitute Key Columns for a Table
Setting Substitute Key Columns for a Table
Removing the Substitute Key Columns for a Table
Using Virtual Dependency Definitions
Setting and Unsetting Value Dependencies
Schema Differences and Value Dependencies
Undefined Constraints at the Destination Database and Value Dependencies
Creating and Dropping Object Dependencies
Creating an Object Dependency
Dropping an Object Dependency
Dropping an Apply Process
18
Managing Rules
Managing Rule Sets
Creating a Rule Set
Adding a Rule to a Rule Set
Removing a Rule from a Rule Set
Dropping a Rule Set
Managing Rules
Creating a Rule
Creating a Rule without an Action Context
Creating a Rule with an Action Context
Altering a Rule
Changing a Rule Condition
Modifying a Name-Value Pair in a Rule Action Context
Adding a Name-Value Pair to a Rule Action Context
Removing a Name-Value Pair from a Rule Action Context
Modifying System-Created Rules
Dropping a Rule
Managing Privileges on Evaluation Contexts, Rule Sets, and Rules
Granting System Privileges on Evaluation Contexts, Rule Sets, and Rules
Granting Object Privileges on an Evaluation Context, Rule Set, or Rule
Revoking System Privileges on Evaluation Contexts, Rule Sets, and Rules
Revoking Object Privileges on an Evaluation Context, Rule Set, or Rule
19
Managing Rule-Based Transformations
Managing Declarative Rule-Based Transformations
Adding Declarative Rule-Based Transformations
Adding a Declarative Rule-Based Transformation that Renames a Table
Adding a Declarative Rule-Based Transformation that Adds a Column
Overwriting an Existing Declarative Rule-Based Transformation
Removing Declarative Rule-Based Transformations
Managing Custom Rule-Based Transformations
Creating a Custom Rule-Based Transformation
Altering a Custom Rule-Based Transformation
Unsetting a Custom Rule-Based Transformation
20
Using Oracle Streams to Record Table Changes
About Using Oracle Streams to Record Changes to Tables
Preparing for an Oracle Streams Environment That Records Table Changes
Decisions to Make Before Running the MAINTAIN_CHANGE_TABLE Procedure
Decide Which Type of Environment to Configure
Decide Which Columns to Track
Decide Which Metadata to Record
Decide Which Values to Track for Update Operations
Decide Whether to Configure a KEEP_COLUMNS Transformation
Decide Whether to Specify CREATE TABLE Options for the Change Table
Decide Whether to Perform the Configuration Actions Directly or with a Script
Decide Whether to Replicate the Source Table
Prerequisites for the MAINTAIN_CHANGE _TABLE Procedure
Configure an Oracle Streams Administrator on All Databases
Configure Network Connectivity and Database Links
Ensure That the Source Database Is in ARCHIVELOG Mode
Set Initialization Parameters That Are Relevant to Oracle Streams
Configure the Oracle Streams Pool
Configure Log File Transfer to a Downstream Capture Database
Configure Standby Redo Logs for Real-Time Downstream Capture
Configure the Required Directory Object If You Are Using a Script
Instantiate the Source Table at the Destination Database
Configuring an Oracle Streams Environment That Records Table Changes
Recording Table Changes Using Local Capture and Apply on One Database
Recording Table Changes Using Local Capture and Remote Apply with Replication
Recording Table Changes Using Downstream Capture and Local Apply
Recording Table Changes Using Downstream Capture and Remote Apply
Managing an Oracle Streams Environment That Records Table Changes
Unsetting and Setting a Change Handler
Recording Changes to a Table Using Existing Oracle Streams Components
Maintaining Change Tables
Managing the Oracle Streams Environment
Monitoring an Oracle Streams Environment That Records Table Changes
Monitoring a Change Table
Monitoring Change Handlers
Displaying General Information About Change Handlers
Displaying the Change Table and Source Table for Change Handlers
Monitoring the Oracle Streams Environment
21
Other Oracle Streams Management Tasks
Performing Full Database Export/Import in an Oracle Streams Environment
Removing an Oracle Streams Configuration
Part IV Monitoring Oracle Streams
22
Monitoring an Oracle Streams Environment
Summary of Oracle Streams Static Data Dictionary Views
Summary of Oracle Streams Dynamic Performance Views
23
Monitoring the Oracle Streams Topology and Performance
About the Oracle Streams Topology
About the Oracle Streams Performance Advisor
Oracle Streams Performance Advisor Data Dictionary Views
Oracle Streams Components and Statistics
About Stream Paths in an Oracle Streams Topology
Separate Stream Paths in an Oracle Streams Environment
Shared Stream Paths in an Oracle Streams Replication Environment
About the Information Gathered by the Oracle Streams Performance Advisor
Gathering Information About the Oracle Streams Topology and Performance
Viewing the Oracle Streams Topology and Analyzing Oracle Streams Performance
Viewing the Oracle Streams Topology
Viewing the Databases in the Oracle Streams Environment
Viewing the Oracle Streams Components at Each Database
Viewing Each Stream Path in an Oracle Streams Topology
Viewing Performance Statistics for Oracle Streams Components
Checking for Bottleneck Components in the Oracle Streams Topology
Viewing Component-Level Statistics
Viewing Session-Level Statistics
Viewing Statistics for the Stream Paths in an Oracle Streams Environment
Using the UTL_SPADV Package
Collecting Oracle Streams Statistics Using the UTL_SPADV Package
Checking Whether an Oracle Streams Monitoring Job Is Currently Running
Altering an Oracle Streams Monitoring Job
Stopping an Oracle Streams Monitoring Job
Showing Oracle Streams Statistics Using the UTL_SPADV Package
24
Monitoring Oracle Streams Implicit Capture
Monitoring a Capture Process
Displaying the Queue, Rule Sets, and Status of Each Capture Process
Displaying Session Information About Each Capture Process
Displaying Change Capture Information About Each Capture Process
Displaying State Change and Message Creation Time for Each Capture Process
Displaying Elapsed Time Performing Capture Operations for Each Capture Process
Displaying Information About Each Downstream Capture Process
Displaying the Registered Redo Log Files for Each Capture Process
Displaying the Redo Log Files that Are Required by Each Capture Process
Displaying SCN Values for Each Redo Log File Used by Each Capture Process
Displaying the Last Archived Redo Entry Available to Each Capture Process
Listing the Parameter Settings for Each Capture Process
Determining the Applied SCN for All Capture Processes in a Database
Determining Redo Log Scanning Latency for Each Capture Process
Determining Message Enqueuing Latency for Each Capture Process
Displaying Information About Rule Evaluations for Each Capture Process
Determining Which Capture Processes Use Combined Capture and Apply
Displaying Information About Split and Merge Operations
Displaying the Names of the Original and Cloned Oracle Streams Components
Displaying the Actions and Thresholds for Split and Merge Operations
Displaying the Lag Time of the Cloned Capture Process
Displaying Information About the Split and Merge Jobs
Displaying Information About Past Split and Merge Operations
Monitoring Supplemental Logging
Displaying Supplemental Log Groups at a Source Database
Displaying Database Supplemental Logging Specifications
Displaying Supplemental Logging Specified During Preparation for Instantiation
Monitoring a Synchronous Capture
Displaying the Queue and Rule Set of Each Synchronous Capture
Displaying the Tables For Which Synchronous Capture Captures Changes
Viewing the Extra Attributes Captured by Implicit Capture
25
Monitoring Oracle Streams Queues and Propagations
Monitoring Queues and Messaging
Displaying the ANYDATA Queues in a Database
Viewing the Messaging Clients in a Database
Viewing Message Notifications
Determining the Consumer of Each Message in a Persistent Queue
Viewing the Contents of Messages in a Persistent Queue
Monitoring Buffered Queues
Determining the Number of Messages in Each Buffered Queue
Viewing the Capture Processes for the LCRs in Each Buffered Queue
Displaying Information About Propagations that Send Buffered Messages
Displaying the Number of Messages and Bytes Sent By Propagations
Displaying Performance Statistics for Propagations that Send Buffered Messages
Viewing the Propagations Dequeuing Messages from Each Buffered Queue
Displaying Performance Statistics for Propagations That Receive Buffered Messages
Viewing the Apply Processes Dequeuing Messages from Each Buffered Queue
Monitoring Oracle Streams Propagations and Propagation Jobs
Displaying the Queues and Database Link for Each Propagation
Determining the Source Queue and Destination Queue for Each Propagation
Determining the Rule Sets for Each Propagation
Displaying Information About the Schedules for Propagation Jobs
Determining the Total Number of Messages and Bytes Propagated
Displaying Information About Propagation Senders
Displaying Information About Propagation Receivers
Displaying Session Information About Each Propagation
26
Monitoring Oracle Streams Apply Processes
Determining the Queue, Rule Sets, and Status for Each Apply Process
Displaying General Information About Each Apply Process
Listing the Parameter Settings for Each Apply Process
Displaying Information About Apply Handlers
Displaying Information About DML Handlers
Displaying Information About All DML Handlers
Displaying Information About Statement DML Handlers
Displaying Information About Procedure DML Handlers
Displaying the DDL Handler for Each Apply Process
Displaying All of the Error Handlers for Local Apply Processes
Displaying the Message Handler for Each Apply Process
Displaying the Precommit Handler for Each Apply Process
Displaying Session Information About Each Apply Process
Displaying Information About the Reader Server for Each Apply Process
Monitoring Transactions and Messages Spilled by Each Apply Process
Determining Capture to Dequeue Latency for a Message
Displaying General Information About Each Coordinator Process
Displaying Information About Transactions Received and Applied
Determining the Capture to Apply Latency for a Message for Each Apply Process
Example V$STREAMS_APPLY_COORDINATOR Query for Latency
Example DBA_APPLY_PROGRESS Query for Latency
Displaying Information About the Apply Servers for Each Apply Process
Displaying Effective Apply Parallelism for an Apply Process
Viewing Rules that Specify a Destination Queue on Apply
Viewing Rules that Specify No Execution on Apply
Determining Which Apply Processes Use Combined Capture and Apply
Displaying the Substitute Key Columns Specified at a Destination Database
Monitoring Virtual Dependency Definitions
Displaying Value Dependencies
Displaying Object Dependencies
Checking for Apply Errors
Displaying Detailed Information About Apply Errors
27
Monitoring Rules
Displaying All Rules Used by All Oracle Streams Clients
Displaying the Oracle Streams Rules Used by a Specific Oracle Streams Client
Displaying the Rules in the Positive Rule Set for an Oracle Streams Client
Displaying the Rules in the Negative Rule Set for an Oracle Streams Client
Displaying the Current Condition for a Rule
Displaying Modified Rule Conditions for Oracle Streams Rules
Displaying the Evaluation Context for Each Rule Set
Displaying Information About the Tables Used by an Evaluation Context
Displaying Information About the Variables Used in an Evaluation Context
Displaying All of the Rules in a Rule Set
Displaying the Condition for Each Rule in a Rule Set
Listing Each Rule that Contains a Specified Pattern in Its Condition
Displaying Aggregate Statistics for All Rule Set Evaluations
Displaying Information About Evaluations for Each Rule Set
Determining the Resources Used by Evaluation of Each Rule Set
Displaying Evaluation Statistics for a Rule
28
Monitoring Rule-Based Transformations
Displaying Information About All Rule-Based Transformations
Displaying Declarative Rule-Based Transformations
Displaying Information About ADD COLUMN Transformations
Displaying Information About RENAME TABLE Transformations
Displaying Custom Rule-Based Transformations
29
Monitoring Other Oracle Streams Components
Monitoring Oracle Streams Administrators and Other Oracle Streams Users
Listing Local Oracle Streams Administrators
Listing Users Who Allow Access to Remote Oracle Streams Administrators
Monitoring the Oracle Streams Pool
Query Result that Advises Increasing the Oracle Streams Pool Size
Query Result that Advises Retaining the Current Oracle Streams Pool Size
Query Result that Advises Decreasing the Oracle Streams Pool Size
Monitoring Compatibility in an Oracle Streams Environment
Monitoring Compatibility for Capture Processes
Listing the Database Objects That Are Not Compatible with Capture Processes
Listing the Database Objects Recently Compatible with Capture Processes
Listing Database Objects and Columns Not Compatible with Synchronous Captures
Monitoring Compatibility for Apply Processes
Listing Database Objects and Columns Not Compatible with Apply Processes
Listing Columns That Have Become Compatible with Apply Processes Recently
Monitoring Oracle Streams Performance Using AWR and Statspack
Part V Troubleshooting an Oracle Streams Environment
30
Identifying Problems in an Oracle Streams Environment
Viewing Oracle Streams Alerts
Using the Streams Configuration Report and Health Check Script
Handling Performance Problems Because of an Unavailable Destination
Checking the Trace Files and Alert Log for Problems
Does a Capture Process Trace File Contain Messages About Capture Problems?
Do the Trace Files Related to Propagation Jobs Contain Messages About Problems?
Does an Apply Process Trace File Contain Messages About Apply Problems?
31
Troubleshooting Implicit Capture
Troubleshooting Capture Process Problems
Is Capture Process Creation or Data Dictionary Build Taking a Long Time?
Is the Capture Process Enabled?
Is the Capture Process Waiting for Redo?
Is the Capture Process Paused for Flow Control?
Is the Capture Process Current?
Are Required Redo Log Files Missing?
Is a Downstream Capture Process Waiting for Redo Data?
Are You Trying to Configure Downstream Capture Incorrectly?
Are You Trying to Configure Downstream Capture without Proper Authentication?
Are More Actions Required for Downstream Capture without a Database Link?
Troubleshooting Synchronous Capture Problems
Is a Synchronous Capture Failing to Capture Changes to Tables?
32
Troubleshooting Propagation
Does the Propagation Use the Correct Source and Destination Queue?
Is the Propagation Enabled?
Is Security Configured Properly for the ANYDATA Queue?
ORA-24093 AQ Agent not granted privileges of database user
ORA-25224 Sender name must be specified for enqueue into secure queues
33
Troubleshooting Apply
Is the Apply Process Enabled?
Is the Apply Process Current?
Does the Apply Process Apply Captured LCRs?
Is the Apply Process's Queue Receiving the Messages to be Applied?
Is a Custom Apply Handler Specified?
Is the AQ_TM_PROCESSES Initialization Parameter Set to Zero?
Does the Apply User Have the Required Privileges?
Is the Apply Process Encountering Contention?
Is the Apply Process Waiting for a Dependent Transaction?
Is an Apply Server Performing Poorly for Certain Transactions?
Are There Any Apply Errors in the Error Queue?
Using a DML Handler to Correct Error Transactions
Troubleshooting Specific Apply Errors
ORA-01031 Insufficient Privileges
ORA-01403 No Data Found
ORA-23605 Invalid Value for Oracle Streams Parameter
ORA-23607 Invalid Column
ORA-24031 Invalid Value,
parameter_name
Should Be Non-NULL
ORA-26687 Instantiation SCN Not Set
ORA-26688 Missing Key in LCR
ORA-26689 Column Type Mismatch
ORA-26786 A row with key exists but has conflicting column(s) in table
ORA-26787 The row with key
column_value
does not exist in table
table_name
34
Troubleshooting Rules and Rule-Based Transformations
Are Rules Configured Properly for the Oracle Streams Client?
Checking Schema and Global Rules
Checking Table Rules
Checking Subset Rules
Checking for Message Rules
Resolving Problems with Rules
Are Declarative Rule-Based Transformations Configured Properly?
Are the Custom Rule-Based Transformations Configured Properly?
Are Incorrectly Transformed LCRs in the Error Queue?
Part VI Oracle Streams Information Provisioning
35
Information Provisioning Concepts
Overview of Information Provisioning
Bulk Provisioning of Large Amounts of Information
Data Pump Export/Import
Transportable Tablespace from Backup with RMAN
DBMS_STREAMS_TABLESPACE_ADM Procedures
File Group Repository
Tablespace Repository
Read-Only Tablespaces Requirement During Export
Automatic Platform Conversion for Tablespaces
Options for Bulk Information Provisioning
Incremental Information Provisioning with Oracle Streams
On-Demand Information Access
36
Using Information Provisioning
Using a Tablespace Repository
Creating and Populating a Tablespace Repository
Using a Tablespace Repository for Remote Reporting with a Shared File System
Using a Tablespace Repository for Remote Reporting without a Shared File System
Using a File Group Repository
37
Monitoring File Group and Tablespace Repositories
Monitoring a File Group Repository
Displaying General Information About the File Groups in a Database
Displaying Information About File Group Versions
Displaying Information About File Group Files
Monitoring a Tablespace Repository
Displaying Information About the Tablespaces in a Tablespace Repository
Displaying Information About the Tables in a Tablespace Repository
Displaying Export Information About Versions in a Tablespace Repository
Part VII Appendixes
A
How Oracle Streams Works with Other Database Components
Oracle Streams and Oracle Real Application Clusters
Capture Processes and Oracle Real Application Clusters
Synchronous Capture and Oracle Real Application Clusters
Combined Capture and Apply and Oracle Real Application Clusters
Queues and Oracle Real Application Clusters
Propagations and Oracle Real Application Clusters
Apply Processes and Oracle Real Application Clusters
Oracle Streams and Transparent Data Encryption
Capture Processes and Transparent Data Encryption
Synchronous Capture and Transparent Data Encryption
Explicit Capture and Transparent Data Encryption
Queues and Transparent Data Encryption
Propagations and Transparent Data Encryption
Apply Processes and Transparent Data Encryption
Messaging Clients and Transparent Data Encryption
Manual Dequeue and Transparent Data Encryption
Oracle Streams and Flashback Data Archive
Oracle Streams and Recovery Manager (RMAN)
RMAN and Instantiation
RMAN and Archived Redo Log Files Required by a Capture Process
RMAN and Local Capture Processes
RMAN and Downstream Capture Processes
The Recovery Catalog and Oracle Streams
Oracle Streams and Distributed Transactions
Oracle Streams and Oracle Data Vault
B
Oracle Streams Restrictions
Capture Process Restrictions
Unsupported Data Types for Capture Processes
Unsupported Changes for Capture Processes
Unsupported Schemas for Capture Processes
Unsupported Table Types for Capture Processes
Unsupported DDL Changes for Capture Processes
Changes Ignored by a Capture Process
NOLOGGING and UNRECOVERABLE Keywords for SQL Operations
UNRECOVERABLE Clause for Direct Path Loads
Supplemental Logging Data Type Restrictions
Operational Requirements for Downstream Capture
Capture Processes Do Not Support Oracle Label Security
Capture Process Interoperability with Oracle Streams Apply Processes
Synchronous Capture Restrictions
Synchronous Captures Only Use Table Rules
Unsupported Data Types for Synchronous Captures
Unsupported Changes for Synchronous Captures
Unsupported Schemas for Synchronous Captures
Unsupported Table Types for Synchronous Captures
Changes Ignored by Synchronous Capture
Synchronous Capture Rules and the DBMS_STREAMS_ADM Package
Synchronous Captures Do Not Support Oracle Label Security
Queue Restrictions
Explicit Enqueue Restrictions for ANYDATA Queues
Restrictions for Buffered Messaging
Triggers and Queue Tables
Propagation Restrictions
Connection Qualifiers and Propagations
Character Set Restrictions for Propagations
Compatibility Requirements for Queue-To-Queue Propagations
Apply Process Restrictions
Unsupported Data Types for Apply Processes
Unsupported Data Types for Apply Handlers
Types of DDL Changes Ignored by an Apply Process
Database Structures in an Oracle Streams Environment
Current Schema User Must Exist at Destination Database
Apply Processes Do Not Support Oracle Label Security
Apply Process Interoperability with Oracle Streams Capture Components
Messaging Client Restrictions
Messaging Clients and Buffered Messages
Rule Restrictions
Restrictions for Subset Rules
Restrictions for Action Contexts
Rule-Based Transformation Restrictions
Unsupported Data Types for Declarative Rule-Based Transformations
Unsupported Data Types for Custom Rule-Based Transformations
Character Set Restrictions for Oracle Streams Replication
C
XML Schema for LCRs
Definition of the XML Schema for LCRs
D
Online Database Upgrade and Maintenance with Oracle Streams
Overview of Using Oracle Streams for Upgrade and Maintenance Operations
The Capture Database During the Upgrade or Maintenance Operation
Assumptions for the Database Being Upgraded or Maintained
Considerations for Job Slaves and PL/SQL Package Subprograms
Unsupported Database Objects Are Excluded
Preparing for a Database Upgrade or Maintenance Operation
Preparing for Downstream Capture
Preparing for Upgrade or Maintenance of a Database with User-Defined Types
Preparing for Upgrades to User-Created Applications
Handling Modifications to Schema Objects
Handling Logical Dependencies
Deciding Whether to Configure Oracle Streams Directly or Generate a Script
Deciding Which Utility to Use for Instantiation
Performing a Database Upgrade or Maintenance Operation Using Oracle Streams
Task 1: Beginning the Operation
Task 2: Setting Up Oracle Streams Before Instantiation
The Source Database Is the Capture Database
The Destination Database Is the Capture Database
A Third Database Is the Capture Database
Task 3: Instantiating the Database
Instantiating the Database Using Export/Import
Instantiating the Database Using the RMAN DUPLICATE Command
Instantiating the Database Using the RMAN CONVERT DATABASE Command
Task 4: Setting Up Oracle Streams After Instantiation
The Source Database Is the Capture Database
The Destination Database Is the Capture Database
A Third Database Is the Capture Database
Task 5: Finishing the Upgrade or Maintenance Operation and Removing Oracle Streams
E
Online Upgrade of a 10.1 or Earlier Database with Oracle Streams
Overview of Using Oracle Streams in the Database Upgrade Process
The Capture Database During the Upgrade Process
Assumptions for the Database Being Upgraded
Considerations for Job Queue Processes and PL/SQL Package Subprograms
Preparing for a Database Upgrade Using Oracle Streams
Preparing to Upgrade a Database with User-Defined Types
Deciding Which Utility to Use for Instantiation
Performing a Database Upgrade Using Oracle Streams
Task 1: Beginning the Upgrade
Task 2: Setting Up Oracle Streams Before Instantiation
The Source Database Is the Capture Database
The Destination Database Is the Capture Database
A Third Database Is the Capture Database
Task 3: Instantiating the Database
Instantiating the Database Using Export/Import
Instantiating the Database Using RMAN
Task 4: Setting Up Oracle Streams After Instantiation
The Source Database Is the Capture Database
The Destination Database Is the Capture Database
A Third Database Is the Capture Database
Task 5: Finishing the Upgrade and Removing Oracle Streams
Glossary
Index
Scripting on this page enhances content navigation, but does not change the content in any way.