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Oracle® Data Guard Broker
11
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Release 2 (11.2)
Part Number E17023-08
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Contents
List of Examples
List of Figures
List of Tables
Title and Copyright Information
Preface
Audience
Documentation Accessibility
Related Documents
Conventions
What's New in Oracle Data Guard Broker?
New Features in Oracle Data Guard Broker 11.2
New Features in Oracle Data Guard Broker 11.1
1
Oracle Data Guard Broker Concepts
1.1
Overview of Oracle Data Guard and the Broker
1.1.1
Data Guard Configurations and Broker Configurations
1.1.2
Oracle Data Guard Broker
1.2
Benefits of Data Guard Broker
1.3
Data Guard Broker Management Model
1.4
Data Guard Broker Components
1.5
Data Guard Broker User Interfaces
1.5.1
Oracle Enterprise Manager
1.5.2
Data Guard Command-Line Interface (DGMGRL)
1.6
Data Guard Monitor
1.6.1
Data Guard Monitor (DMON) Process
1.6.2
Configuration Management
1.6.3
Database Property Management
2
Oracle Data Guard Installation
2.1
Oracle Data Guard Installation
2.2
Prerequisites
3
Managing Broker Configurations
3.1
Configuration Support
3.2
Setting Up the Broker Configuration Files
3.2.1
Renaming the Broker Configuration Files
3.2.2
Managing Broker Configuration Files in an Oracle RAC Environment
3.2.2.1
Using Cluster File System (CFS) for Configuration Files
3.2.2.2
Using Oracle ASM Disk Groups for Configuration Files
3.2.2.3
Using Raw Devices for Configuration Files
3.3
Starting the Data Guard Broker
3.4
Management Cycle of a Broker Configuration
3.5
Enable and Disable Operations
3.6
Configuration Status
4
Managing Databases
4.1
Database Objects
4.2
Database States
4.2.1
Database State Transitions
4.3
Database Properties
4.3.1
Monitorable (Read-Only) Properties
4.3.2
Configurable (Changeable) Database Properties
4.4
Managing Redo Transport Services
4.4.1
Setting Up For Redo Transport
4.4.2
Managing Redo Transport Services for Data Protection Modes
4.4.3
Turning Redo Transport Services On and Off
4.4.4
Specifying Locations for Archived Redo Log Files
4.4.5
Other Redo Transport Settings
4.4.6
Redo Transport Services in an Oracle RAC Database Environment
4.4.7
Transport Lag
4.5
Managing Log Apply Services
4.5.1
Managing Delayed Apply
4.5.2
Managing Parallel Apply with Redo Apply
4.5.3
Allocating Resources to SQL Apply
4.5.4
Managing SQL Apply Filtering
4.5.5
Managing SQL Apply Error Handling
4.5.6
Managing the DBA_LOGSTDBY_EVENTS Table
4.5.7
Apply Services in an Oracle RAC Database Environment
4.5.7.1
Selecting the Apply Instance
4.5.7.2
Apply Instance Failover
4.5.8
Apply Lag
4.6
Managing Data Protection Modes
4.6.1
Setting the Protection Mode for Your Configuration
4.6.2
How the Protection Modes Influence Broker Operations
4.6.2.1
Upgrading or Downgrading the Current Protection Mode
4.6.2.2
Switchover Operations
4.6.2.3
Failover Operations
4.6.2.4
Disable and Enable Operations
4.6.2.5
Requirements For Removing a Database from the Configuration
4.6.2.6
Requirements On Other Operations
4.7
Managing Fast-Start Failover
4.7.1
Configure Properties to Tune Fast-Start Failover
4.7.2
Configure Conditions for Fast-start Failover
4.7.3
Application Initiated Fast-Start Failover
4.8
Managing Database Conversions
4.9
Database Status
5
Switchover and Failover Operations
5.1
Overview of Switchover and Failover in a Broker Environment
5.2
Choosing a Target Standby Database
5.2.1
Choosing a Target Standby Database for Switchover
5.2.2
Choosing a Target Standby Database for Failover
5.3
Switchover
5.3.1
Before You Perform a Switchover Operation
5.3.2
Starting a Switchover
5.3.3
How the Broker Performs a Switchover
5.4
Manual Failover
5.4.1
Complete and Immediate Manual Failovers
5.4.2
Performing a Manual Failover Operation
5.4.2.1
How the Broker Performs a Complete Failover Operation
5.4.2.2
How the Broker Performs an Immediate Failover Operation
5.4.3
Reenabling Disabled Databases After a Role Change
5.4.3.1
How to Reinstate a Database
5.4.3.2
How to Re-create and Reenable a Disabled Database
5.5
Fast-Start Failover
5.5.1
Prerequisites for Enabling Fast-Start Failover
5.5.2
Enabling Fast-Start Failover
5.5.2.1
When Fast-Start Failover Is Enabled and the Observer Is Running
5.5.2.2
Restrictions When Fast-Start Failover is Enabled
5.5.2.3
Shutting Down the Primary Database When Fast-Start Failover Is Enabled
5.5.2.4
Performing Manual Role Changes When Fast-Start Failover Is Enabled
5.5.3
Directing a Fast-Start Failover From an Application
5.5.4
Viewing Fast-Start Failover Configuration Statistics and Status
5.5.4.1
V$DATABASE View
5.5.4.2
V$FS_FAILOVER_STATS View
5.5.5
Disabling Fast-Start Failover
5.5.6
Performance Considerations for Fast-Start Failover
5.5.7
Managing the Observer
5.5.7.1
Installing and Starting the Observer
5.5.7.2
Viewing Information About the Observer
5.5.7.3
What Happens if the Observer Fails?
5.5.7.4
Stopping the Observer
5.5.7.5
Moving the Observer to Another Computer
5.5.7.6
How the Observer Maintains Fast-Start Failover Configuration Information
5.5.8
Reinstating the Former Primary Database in the Broker Configuration
5.5.8.1
Requirements
5.5.8.2
Restrictions on Reinstatement
5.5.8.3
How the Broker Handles a Failed Reinstatement
5.5.9
Shutting Down Databases In a Fast-Start Failover Environment
5.6
Database Client Considerations
5.6.1
Data Guard Specific FAN and FCF Configuration Requirements
5.6.1.1
Oracle Net Configuration Requirements
5.6.1.2
Database Service Configuration Requirements
5.6.1.3
ONS Configuration Requirements
6
Scenarios Using the DGMGRL Command-Line Interface
6.1
Prerequisites for Getting Started
6.2
Scenario 1: Creating a Configuration
6.3
Scenario 2: Setting Database Properties
6.4
Scenario 3: Enabling the Configuration and Databases
6.5
Scenario 4: Setting the Configuration Protection Mode
6.6
Scenario 5: Enabling Fast-Start Failover and Starting the Observer
6.7
Scenario 6: Performing Routine Management Tasks
6.7.1
Changing Properties and States
6.7.1.1
Alter a Database Property
6.7.1.2
Alter the State of a Standby Database
6.7.1.3
Alter the State of a Primary Database
6.7.2
Disabling the Configuration and Databases
6.7.2.1
Disable a Configuration
6.7.2.2
Disable a Standby Database
6.7.3
Removing the Configuration or a Standby Database
6.8
Scenario 7: Performing a Switchover Operation
6.9
Scenario 8: Performing a Manual Failover Operation
6.10
Scenario 9: Reinstating a Failed Primary Database
6.11
Scenario 10: Converting a Physical Standby to a Snapshot Standby
6.12
Scenario 11: Monitoring a Data Guard Configuration
7
Data Guard Command-Line Interface Reference
7.1
Starting the Data Guard Command-Line Interface
7.1.1
DGMGRL Optional Parameters
7.1.2
DGMGRL Command Format and Parameters
7.1.3
DGMGRL Command Usage Notes
7.2
Exiting the Data Guard Command-Line Interface
ADD DATABASE
CONNECT
CONVERT DATABASE
CREATE CONFIGURATION
DISABLE CONFIGURATION
DISABLE DATABASE
DISABLE FAST_START FAILOVER
DISABLE FAST_START FAILOVER CONDITION
EDIT CONFIGURATION (Property)
EDIT CONFIGURATION (Protection Mode)
EDIT DATABASE (Property)
EDIT DATABASE (Rename)
EDIT DATABASE (State)
EDIT INSTANCE (AUTO PFILE)
EDIT INSTANCE (Property)
ENABLE CONFIGURATION
ENABLE DATABASE
ENABLE FAST_START FAILOVER
ENABLE FAST_START FAILOVER CONDITION
EXIT
FAILOVER
HELP
QUIT
REINSTATE DATABASE
REMOVE CONFIGURATION
REMOVE DATABASE
REMOVE INSTANCE
SHOW CONFIGURATION
SHOW DATABASE
SHOW FAST_START FAILOVER
SHOW INSTANCE
SHUTDOWN
START OBSERVER
STARTUP
STOP OBSERVER
SWITCHOVER
8
Data Guard Broker Properties
8.1
Configuration Properties
8.1.1
BystandersFollowRoleChange
8.1.2
CommunicationTimeout
8.1.3
FastStartFailoverAutoReinstate
8.1.4
FastStartFailoverLagLimit
8.1.5
FastStartFailoverPmyShutdown
8.1.6
FastStartFailoverThreshold
8.1.7
OperationTimeout
8.2
Monitorable (Read-Only) Database Properties
8.2.1
InconsistentLogXptProps (Inconsistent Redo Transport Properties)
8.2.2
InconsistentProperties (Inconsistent Database Properties)
8.2.3
LogXptStatus (Redo Transport Status)
8.2.4
LsbyFailedTxnInfo (Logical Standby Failed Transaction Information)
8.2.5
LsbyParameters (Logical Standby Parameters)
8.2.6
LsbySkipTable (Logical Standby Skip Table)
8.2.7
LsbySkipTxnTable (SQL Apply Skip Transaction Table)
8.2.8
RecvQEntries (Receive Queue Entries)
8.2.9
SendQEntries (Send Queue Entries)
8.2.10
TopWaitEvents
8.3
Configurable Database Properties
8.3.1
AlternateLocation
8.3.2
ApplyInstanceTimeout
8.3.3
ApplyParallel
8.3.4
ArchiveLagTarget
8.3.5
Binding
8.3.6
DbFileNameConvert
8.3.7
DelayMins
8.3.8
DGConnectIdentifier
8.3.9
FastStartFailoverTarget
8.3.10
LogArchiveFormat
8.3.11
LogArchiveMaxProcesses
8.3.12
LogArchiveMinSucceedDest
8.3.13
LogArchiveTrace
8.3.14
LogFileNameConvert
8.3.15
LogShipping
8.3.16
LogXptMode
8.3.17
LsbyASkipCfgPr
8.3.18
LsbyASkipErrorCfgPr
8.3.19
LsbyASkipTxnCfgPr
8.3.20
LsbyDSkipCfgPr
8.3.21
LsbyDSkipErrorCfgPr
8.3.22
LsbyDSkipTxnCfgPr
8.3.23
LsbyMaxEventsRecorded
8.3.24
LsbyMaxSga
8.3.25
LsbyMaxServers
8.3.26
LsbyPreserveCommitOrder
8.3.27
LsbyRecordAppliedDdl
8.3.28
LsbyRecordSkipDdl
8.3.29
LsbyRecordSkipErrors
8.3.30
MaxConnections
8.3.31
MaxFailure
8.3.32
NetTimeout
8.3.33
ObserverConnectIdentifier
8.3.34
PreferredApplyInstance
8.3.35
RedoCompression
8.3.36
ReopenSecs
8.3.37
SidName
8.3.38
StandbyArchiveLocation
8.3.39
StandbyFileManagement
8.3.40
StaticConnectIdentifier
9
Troubleshooting Data Guard
9.1
Sources of Diagnostic Information
9.2
General Problems and Solutions
9.2.1
ORA-16596: database not part of the Data Guard broker configuration
9.2.2
Redo Accumulating on the Primary Is Not Sent to Some Standby Databases
9.2.3
Many Log Files Are Received on a Standby Database But Not Applied
9.2.4
The Request Timed Out or Enterprise Manager Performance Is Sluggish
9.2.5
The Primary Database is Flashed Back
9.2.6
Standby Fails to Automatically Start Up Due to Unknown Service (ORA-12514)
9.3
Troubleshooting Problems During a Switchover Operation
9.3.1
Failed Switchovers to Physical Standby Databases
9.3.1.1
Failure to Convert the Original Primary Database
9.3.1.2
Failure to Convert Target Physical Standby Database
9.3.1.3
Failure to Open New Primary Database
9.3.2
Failed Switchovers to Logical Standby Databases
9.3.2.1
Failure to Convert Original Primary Database
9.3.2.2
Failure to Convert Target Logical Standby Database
9.3.3
Additional Problems That May Occur During a Switchover Operation
9.4
Troubleshooting Problems During a Failover Operation
9.4.1
Failed Failovers to Physical Standby Databases
9.4.1.1
Failed Broker Complete Physical Failovers
9.4.1.2
Failed Broker Immediate Physical Failovers
9.4.2
Failed Failovers to Logical Standby Databases
9.5
Troubleshooting Problems with the Observer
9.5.1
Problems Starting the Observer
9.5.2
Problems Because the Observer Has Stopped
9.5.3
Capturing Observer Actions in the Observer Log File
A
Changed and Deprecated Features
A.1
Changed Features
A.1.1
General Features That Changed
A.1.1.1
Changed Features in Release 11.2
A.1.1.2
Changed Features in Release 11.1
A.1.1.3
Changed Features in Release 10.2
A.1.2
Changed Properties
A.1.2.1
Changed Properties in Release 11.2
A.1.2.2
Changed Properties in Release 11.1
A.1.2.3
Changed Properties in Release 10.2
A.1.3
Changed State Names
A.1.4
Changed DGMGRL Features in Release 10.2
A.2
Deprecated and Obsolete Features
A.2.1
Deprecated and Obsolete Features in Release 11.2
A.2.2
Deprecated and Obsolete Features in Release 11.1
A.2.2.1
Deprecated and Obsolete Properties in Release 11.1
A.2.3
Deprecated and Obsolete Features in Release 10.2
A.2.3.1
Deprecated and Obsolete Properties in Release 10.2
B
Data Guard Broker Upgrading and Downgrading
B.1
Upgrading from Release 9.2.0 to Release 11.2
B.2
Upgrading from Release 10.
n
and 11.1 to Release 11.2
B.3
Upgrading from Release 11.2.0.1 to 11.2.0.2 and other Patch Releases
B.4
Downgrading from Release 11.2
Glossary
Index
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