27 DBMS_AUDIT_MGMT

Using DBMS_AUDIT_MGMT

This section contains topics which relate to using the DBMS_AUDIT_MGMT package. The following topics are included:

• Overview

• Security Model

• Constants

• Views

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Overview

Database auditing helps meet your database security and compliance requirements. Audit records are written to database tables, operating system (OS) files, or XML files depending on the AUDIT_TRAIL initialization parameter setting.

When AUDIT_TRAIL is set to DB, database records are written to the AUD$ table. When AUDIT_TRAIL is set to OS, audit records are written to operating system files. When AUDIT_TRAIL is set to XML, audit records are written to operating system files in XML format.

It is important to manage your audit records properly in order to ensure efficient performance and disk space management. The DBMS_AUDIT_MGMT subprograms enable you to efficiently manage your audit trail records.

The DBMS_AUDIT_MGMT package provides a subprogram that allows you to move the database audit trail tables out of the SYSTEM tablespace. This improves overall database performance by reducing the load on the SYSTEM tablespace. It also enables you to dedicate an optimized tablespace for audit records.

The DBMS_AUDIT_MGMT subprograms also enable you to manage your operating system and XML audit files. You can define properties like the maximum size and age of an audit file. This enables you to keep the file sizes of OS and XML audit files in check.

The DBMS_AUDIT_MGMT subprograms enable you to perform cleanup operations on all audit trail types. Audit trails can be cleaned based on the Last Archive Timestamp value. The Last Archive Timestamp represents the timestamp of the most recent audit record that was securely archived.

The DBMS_AUDIT_MGMT package provides a subprogram that enables audit administrators to set the last archive timestamp for archived audit records. This subprogram can also be used by external archival systems to set the last archive timestamp.

The DBMS_AUDIT_MGMT subprograms also enable you to configure jobs that periodically delete audit trail records. The frequency with which these jobs should run can be controlled by the audit administrator.

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Security Model

All DBMS_AUDIT_MGMT subprograms require the user to have EXECUTE privilege over the DBMS_AUDIT_MGMT package. The SYSDBA role has EXECUTE privileges on the package by default.

Oracle strongly recommends that only audit administrators should have EXECUTE privileges over the DBMS_AUDIT_MGMT package.

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Constants

The DBMS_AUDIT_MGMT package defines several enumerated constants that can be used for specifying parameter values. Enumerated constants must be prefixed with the package name, for example, DBMS_AUDIT_MGMT.AUDIT_TRAIL_AUD_STD.

The DBMS_AUDIT_MGMT package includes the constants shown in the following tables:

• DBMS_AUDIT_MGMT Constants - Audit Trail Types

• DBMS_AUDIT_MGMT Constants - Audit Trail Properties

• DBMS_AUDIT_MGMT Constants - Purge Job Status

Audit trails can be classified based on whether audit records are written to database tables, operating system files, or XML files. Table 27-1 lists the audit trail type constants.

Audit trail properties determine the audit configuration settings. Table 27-2 lists the constants related to audit trail properties.

The audit trail purge job cleans the audit trail. Table 27-3 lists the constants related to purge job status values.

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Views

The views listed in Table 27-4 are used to display DBMS_AUDIT_MGMT configuration and cleanup events.

Subprogram Groups

The DBMS_AUDIT_MGMT package subprograms can be grouped into the following categories:

• Audit Trail Management Subprograms

• Audit Trail Cleanup Subprograms

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Audit Trail Management Subprograms

Audit trail management subprograms enable you to manage audit trail properties.

The Summary of DBMS_AUDIT_MGMT Subprograms contains a complete listing of all subprograms in the package.

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Audit Trail Cleanup Subprograms

Audit trail cleanup subprograms help you perform cleanup related operations on the audit trail records.

The Summary of DBMS_AUDIT_MGMT Subprograms contains a complete listing of all subprograms in the package.

Summary of DBMS_AUDIT_MGMT Subprograms

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CLEAN_AUDIT_TRAIL Procedure

This procedure deletes audit trail records. The CLEAN_AUDIT_TRAIL procedure is usually called after the SET_LAST_ARCHIVE_TIMESTAMP Procedure has been used to set the last archived timestamp for the audit records.

Syntax

DBMS_AUDIT_MGMT.CLEAN_AUDIT_TRAIL(
   audit_trail_type         IN PLS_INTEGER,
   use_last_arch_timestamp  IN BOOLEAN DEFAULT TRUE) ;

Parameters

Usage Notes

The following usage notes apply:

• When cleaning up operating system (OS) or XML audit files, only files in the current audit directory, specified by the AUDIT_FILE_DEST parameter, are cleaned up.

• For Windows platforms, no cleanup is performed when the audit_trail_type parameter is set to DBMS_AUDIT_MGMT.AUDIT_TRAIL_OS. This is because operating system (OS) audit records on Windows are written to the Windows Event Viewer.

• For Unix platforms, no cleanup is performed for cases where the operating system (OS) audit records are written to the syslog. When the audit_trail_type parameter is set to DBMS_AUDIT_MGMT.AUDIT_TRAIL_OS, it removes only the *.aud files under the directory specified by the AUDIT_FILE_DEST initialization parameter.

  See Also:

  "AUDIT_SYSLOG_LEVEL" in the Oracle Database Reference

• When the audit_trail_type parameter is set to DBMS_AUDIT_MGMT.AUDIT_TRAIL_XML, this procedure only removes XML audit files (*.xml) from the current audit directory.

  Oracle database maintains a book-keeping file (adx_$ORACLE_SID.txt) for the XML audit files. This file is not removed by the cleanup procedure.

Examples

The following example calls the CLEAN_AUDIT_TRAIL procedure to clean up the operating system (OS) audit trail records that were updated before the last archive timestamp.

BEGIN
DBMS_AUDIT_MGMT.CLEAN_AUDIT_TRAIL(
   audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_OS,
   use_last_arch_timestamp => TRUE);
END;
/

---

CLEAR_AUDIT_TRAIL_PROPERTY Procedure

This procedure clears the value for the audit trail property that is specified. Audit trail properties are set using the SET_AUDIT_TRAIL_PROPERTY Procedure.

The CLEAR_AUDIT_TRAIL_PROPERTY procedure can optionally reset the property value to it's default value through the use_default_values parameter.

Syntax

DBMS_AUDIT_MGMT.CLEAR_AUDIT_TRAIL_PROPERTY(
   audit_trail_type        IN PLS_INTEGER,
   audit_trail_property    IN PLS_INTEGER,
   use_default_values      IN BOOLEAN DEFAULT FALSE) ;

Parameters

Usage Notes

The following usage notes apply:

• You can use this procedure to clear the value for an audit trail property that you do not wish to use. For example, if you do not want a restriction on the operating system audit file size, then you can use this procedure to reset the OS_FILE_MAX_SIZE property.

  You can also use this procedure to reset an audit trail property to it's default value. You need to set use_default_values to TRUE when invoking the procedure.

• The DB_DELETE_BATCH_SIZE property needs to be individually cleared for the AUDIT_TRAIL_AUD_STD and AUDIT_TRAIL_FGA_STD audit trail types. You cannot clear this property collectively using the AUDIT_TRAIL_DB_STD and AUDIT_TRAIL_ALL audit trail types.

• If you clear the value of the DB_DELETE_BATCH_SIZE property with use_default_value set to FALSE, the default value of DB_DELETE_BATCH_SIZE is still assumed. This is because audit records are always deleted in batches.

• The FILE_DELETE_BATCH_SIZE property needs to be individually cleared for the AUDIT_TRAIL_OS and AUDIT_TRAIL_XML audit trail types. You cannot clear this property collectively using the AUDIT_TRAIL_FILES and AUDIT_TRAIL_ALL audit trail types.

• If you clear the value of the FILE_DELETE_BATCH_SIZE property with use_default_value set to FALSE, the default value of FILE_DELETE_BATCH_SIZE is still assumed. This is because audit files are always deleted in batches.

• You cannot clear the value for the CLEANUP_INTERVAL property.

Examples

The following example calls the CLEAR_AUDIT_TRAIL_PROPERTY procedure to clear the value for the audit trail property, OS_FILE_MAX_SIZE. The procedure uses a value of FALSE for the USE_DEFAULT_VALUES parameter. This means that there will be no maximum size threshold for operating system (OS) audit files.

BEGIN
DBMS_AUDIT_MGMT.CLEAR_AUDIT_TRAIL_PROPERTY(
   AUDIT_TRAIL_TYPE        =>  DBMS_AUDIT_MGMT.AUDIT_TRAIL_OS,
   AUDIT_TRAIL_PROPERTY    =>  DBMS_AUDIT_MGMT.OS_FILE_MAX_SIZE,
   USE_DEFAULT_VALUES      =>  FALSE );
END;
/

---

CLEAR_LAST_ARCHIVE_TIMESTAMP Procedure

This procedure clears the timestamp set by the SET_LAST_ARCHIVE_TIMESTAMP Procedure.

Syntax

DBMS_AUDIT_MGMT.CLEAR_LAST_ARCHIVE_TIMESTAMP(
   audit_trail_type     IN PLS_INTEGER,
   rac_instance_number  IN PLS_INTEGER DEFAULT NULL) ;

Parameters

Usage Notes

The following usage notes apply:

• The timestamp for only one audit_trail_type can be cleared at a time.

• The following are invalid audit_trail_type values for this procedure and cannot be used:

  • AUDIT_TRAIL_ALL

  • AUDIT_TRAIL_DB_STD

  • AUDIT_TRAIL_FILES

Examples

The following example calls the CLEAR_LAST_ARCHIVE_TIMESTAMP procedure to clear the timestamp value for the operating system (OS) audit trail type.

BEGIN
DBMS_AUDIT_MGMT.CLEAR_LAST_ARCHIVE_TIMESTAMP(
   audit_trail_type     =>  DBMS_AUDIT_MGMT.AUDIT_TRAIL_OS,
   rac_instance_number  =>  1);
END;
/

---

CREATE_PURGE_JOB Procedure

This procedure creates a purge job for periodically deleting the audit trail records.

This procedure carries out the cleanup operation at intervals specified by the user. It calls the CLEAN_AUDIT_TRAIL Procedure to perform the cleanup operation.

The SET_PURGE_JOB_INTERVAL Procedure is used to modify the frequency of the purge job.

The SET_PURGE_JOB_STATUS Procedure is used to enable or disable the purge job.

The DROP_PURGE_JOB Procedure is used to drop a purge job created with the CREATE_PURGE_JOB procedure.

Syntax

DBMS_AUDIT_MGMT.CREATE_PURGE_JOB(
   audit_trail_type            IN PLS_INTEGER,
   audit_trail_purge_interval  IN PLS_INTEGER,
   audit_trail_purge_name      IN VARCHAR2,
   use_last_arch_timestamp     IN BOOLEAN DEFAULT TRUE) ;

Parameters

Usage Notes

Use this procedure to schedule the CLEAN_AUDIT_TRAIL Procedure for your audit trail records.

Examples

The following example calls the CREATE_PURGE_JOB procedure to create a cleanup job called CLEANUP, for all audit trail types. It sets the audit_trail_purge_interval parameter to 100. This means that the cleanup job is invoked every 100 hours. It also sets the use_last_arch_timestamp parameter value to TRUE. This means that all audit records older than the last archive timestamp are deleted.

BEGIN
DBMS_AUDIT_MGMT.CREATE_PURGE_JOB(
  audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_ALL,
  audit_trail_purge_interval => 100 /* hours */,  
  audit_trail_purge_name => 'CLEANUP',
  use_last_arch_timestamp => TRUE);
END;
/

---

DEINIT_CLEANUP Procedure

This procedure undoes the setup and initialization performed by the INIT_CLEANUP Procedure. The DEINIT_CLEANUP procedure clears the value of the default_cleanup_interval parameter. However, when used for audit tables, it does not move the audit trail tables back to their original tablespace.

Syntax

DBMS_AUDIT_MGMT.DEINIT_CLEANUP(
   audit_trail_type  IN PLS_INTEGER) ;

Parameters

Examples

The following example clears the default_cleanup_interval parameter setting for the standard database audit trail:

BEGIN
DBMS_AUDIT_MGMT.DEINIT_CLEANUP(
  AUDIT_TRAIL_TYPE  => DBMS_AUDIT_MGMT.AUDIT_TRAIL_AUD_STD);
END;
/

---

DROP_PURGE_JOB Procedure

This procedure drops the purge job created using the CREATE_PURGE_JOB Procedure. The name of the purge job is passed as an argument.

Syntax

DBMS_AUDIT_MGMT.DROP_PURGE_JOB(
   audit_trail_purge_name    IN VARCHAR2) ;

Parameters

Examples

The following example calls the DROP_PURGE_JOB procedure to drop the purge job called CLEANUP.

BEGIN
DBMS_AUDIT_MGMT.DROP_PURGE_JOB(
  AUDIT_TRAIL_PURGE_NAME  => 'CLEANUP');
END;
/

---

GET_AUDIT_COMMIT_DELAY Function

This function returns the Audit Commit Delay as the number of seconds. Audit Commit Delay is the maximum time that it takes to COMMIT an audit record to the database audit trail. If it takes more time to COMMIT an audit record than defined by the Audit Commit Delay, then a copy of the audit record is written to the operating system (OS) audit trail.

The Audit Commit Delay value is useful when determining the last archive timestamp for database audit records.

Syntax

DBMS_AUDIT_MGMT.GET_AUDIT_COMMIT_DELAY
  RETURN NUMBER;

---

INIT_CLEANUP Procedure

This procedure sets up the audit management infrastructure and a default cleanup interval for the audit trail records. If the audit trail tables are in the SYSTEM tablespace, then the procedure moves them to the SYSAUX tablespace.

Moving the audit trail tables out of the SYSTEM tablespace enhances overall database performance. The INIT_CLEANUP procedure moves the audit trail tables to the SYSAUX tablespace. If the SET_AUDIT_TRAIL_LOCATION Procedure has already moved the audit tables elsewhere, then no tables are moved.

The SET_AUDIT_TRAIL_LOCATION Procedure enables you to specify an alternate target tablespace for the database audit tables.

The INIT_CLEANUP procedure is currently not relevant for the AUDIT_TRAIL_OS, AUDIT_TRAIL_XML, and AUDIT_TRAIL_FILES audit trail types. No preliminary set up is required for these audit trail types.

This procedure also sets a default cleanup interval for the audit trail records.

Syntax

DBMS_AUDIT_MGMT.INIT_CLEANUP(
   audit_trail_type          IN PLS_INTEGER,
   default_cleanup_interval  IN PLS_INTEGER);

Parameters

Usage Notes

The following usage notes apply:

• This procedure may involve data movement across tablespaces. This can be a resource intensive operation especially if your database audit trail tables are already populated. Oracle recommends that you invoke the procedure during non-peak hours.

• You should ensure that the SYSAUX tablespace, into which the audit trail tables are being moved, has sufficient space to accommodate the audit trail tables. You should also optimize the SYSAUX tablespace for frequent write operations.

• You can change the default_cleanup_interval later using the SET_AUDIT_TRAIL_PROPERTY Procedure.

• If you do not wish to move the audit trail tables to the SYSAUX tablespace, then you should use the DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_LOCATION procedure to move the audit trail tables to another tablespace before calling the INIT_CLEANUP procedure.

  See Also:

  "SET_AUDIT_TRAIL_LOCATION Procedure"

Examples

The following example calls the INIT_CLEANUP procedure to set a default_cleanup_interval of 12 hours for all audit trail types:

BEGIN
DBMS_AUDIT_MGMT.INIT_CLEANUP(
              audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_ALL,
      default_cleanup_interval => 12 /* hours */);
END;
/

---

IS_CLEANUP_INITIALIZED Function

This function checks to see if the INIT_CLEANUP Procedure has been run for an audit trail type. The IS_CLEANUP_INITIALIZED function returns TRUE if the procedure has already been run for the audit trail type. It returns FALSE if the procedure has not been run for the audit trail type.

This function is currently not relevant for the AUDIT_TRAIL_OS, AUDIT_TRAIL_XML, and AUDIT_TRAIL_FILES audit trail types. The function always returns TRUE for these audit trail types. No preliminary set up is required for these audit trail types.

Syntax

DBMS_AUDIT_MGMT.DEINIT_CLEANUP(
   audit_trail_type  IN PLS_INTEGER)
 RETURN BOOLEAN;

Parameters

Examples

The following example checks to see if the standard database audit trail type has been initialized for cleanup operation. If the audit trail type has not been initialized, then it calls the INIT_CLEANUP Procedure to initialize the audit trail type.

BEGIN
 IF 
   NOT DBMS_AUDIT_MGMT.IS_CLEANUP_INITIALIZED(DBMS_AUDIT_MGMT.AUDIT_TRAIL_AUD_STD)
 THEN
   DBMS_AUDIT_MGMT.INIT_CLEANUP(
      audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_AUD_STD,
      default_cleanup_interval => 12 /* hours */);
 END IF;
END;
/

---

SET_AUDIT_TRAIL_LOCATION Procedure

This procedure moves the audit trail tables from their current tablespace to a user-specified tablespace.

The SET_AUDIT_TRAIL_LOCATION procedure is currently not relevant for the AUDIT_TRAIL_OS, AUDIT_TRAIL_XML, and AUDIT_TRAIL_FILES audit trail types. The AUDIT_FILE_DEST initialization parameter is the only way you can specify the destination directory for these audit trail types.

Syntax

DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_LOCATION(
   audit_trail_type            IN PLS_INTEGER,
   audit_trail_location_value  IN VARCHAR2) ;

Parameters

Usage Notes

The following usage notes apply:

• This procedure involves data movement across tablespaces. This can be a resource intensive operation especially if your database audit trail tables are already populated. Oracle recommends that you invoke the procedure during non-peak hours.

• You should ensure that the target tablespace, into which the audit trail tables are being moved, has sufficient space to accommodate the audit trail tables. You should also optimize the target tablespace for frequent write operations.

• This procedure is valid for the following audit_trail_type values only:

  • AUDIT_TRAIL_AUD_STD

  • AUDIT_TRAIL_FGA_STD

  • AUDIT_TRAIL_DB_STD

Examples

The following example moves the database audit trail tables, AUD$ and FGA_LOG$, from the current tablespace to a user-created tablespace called RECORDS:

BEGIN
DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_LOCATION(
       audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_DB_STD,
       audit_trail_location_value =>  'RECORDS');
END;
/

---

SET_AUDIT_TRAIL_PROPERTY Procedure

This procedure sets an audit trail property for the audit trail type that is specified.

The procedure sets properties like OS_FILE_MAX_SIZE, OS_FILE_MAX_AGE, and FILE_DELETE_BATCH_SIZE for operating system (OS) and XML audit trail types. The OS_FILE_MAX_SIZE and OS_FILE_MAX_AGE properties determine the maximum size and age of an audit trail file before a new audit trail file gets created. The FILE_DELETE_BATCH_SIZE property specifies the number of audit trail files that are deleted in one batch.

The procedure sets properties like DB_DELETE_BATCH_SIZE and CLEANUP_INTERVAL for the database audit trail type. DB_DELETE_BATCH_SIZE specifies the batch size in which records get deleted from audit trail tables. This ensures that if a cleanup operation gets interrupted midway, the process does not need to start afresh the next time it is invoked. This is because all batches before the last processed batch are already committed.

The CLEANUP_INTERVAL specifies the frequency, in hours, with which the cleanup procedure is called.

Syntax

DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_PROPERTY(
   audit_trail_type            IN PLS_INTEGER,
   audit_trail_property        IN PLS_INTEGER,
   audit_trail_property_value  IN PLS_INTEGER) ;

Parameters

Usage Notes

The following usage notes apply:

• The audit trail properties for which you do not explicitly set values use their default values.

• If you have set both the OS_FILE_MAX_SIZE and OS_FILE_MAX_AGE properties for an operating system (OS) or XML audit trail type, then a new audit trail file gets created depending on which of these two limits is reached first.

  For example, let us take a scenario where OS_FILE_MAX_SIZE is 10000 and OS_FILE_MAX_AGE is 5. If the operating system audit file is already more than 5 days old and has a size of 9000 KB, then a new audit file is opened. This is because one of the limits has been reached.

• The DB_DELETE_BATCH_SIZE property needs to be individually set for the AUDIT_TRAIL_AUD_STD and AUDIT_TRAIL_FGA_STD audit trail types. You cannot set this property collectively using the AUDIT_TRAIL_DB_STD and AUDIT_TRAIL_ALL audit trail types.

• The DB_DELETE_BATCH_SIZE property enables you to control the number of audit records that are deleted in one batch. Setting a large value for this parameter requires increased allocation for the undo log space.

• The FILE_DELETE_BATCH_SIZE property needs to be individually set for the AUDIT_TRAIL_OS and AUDIT_TRAIL_XML audit trail types. You cannot set this property collectively using the AUDIT_TRAIL_FILES and AUDIT_TRAIL_ALL audit trail types.

• The FILE_DELETE_BATCH_SIZE property enables you to control the number of audit files that are deleted in one batch. Setting a very large value may engage the GEN0 background process for a long time.

Examples

The following example calls the SET_AUDIT_TRAIL_PROPERTY procedure to set the OS_FILE_MAX_SIZE property for the operating system (OS) audit trail. It sets this property value to 102400. This means that a new audit file gets created every time the current audit file size reaches 100 MB.

BEGIN
DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_PROPERTY(
       audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_OS,
       audit_trail_property  =>  DBMS_AUDIT_MGMT.OS_FILE_MAX_SIZE,
       audit_trail_property_value =>  102400 /* 100MB*/ );
END;
/

The following example calls the SET_AUDIT_TRAIL_PROPERTY procedure to set the OS_FILE_MAX_AGE property for the operating system (OS) audit trail. It sets this property value to 5. This means that a new audit file gets created every sixth day.

BEGIN
DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_PROPERTY(
       audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_OS,
       audit_trail_property  =>  DBMS_AUDIT_MGMT.OS_FILE_MAX_AGE,
       audit_trail_property_value  =>  5 /* days */);
END;
/

The following example calls the SET_AUDIT_TRAIL_PROPERTY procedure to set the DB_DELETE_BATCH_SIZE property for the AUDIT_TRAIL_AUD_STD audit trail. It sets this property value to 100000. This means that during a cleanup operation, audit records are deleted from the SYS.AUD$ table in batches of size 100000.

BEGIN
DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_PROPERTY(
       audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_AUD_STD,
       audit_trail_property => DBMS_AUDIT_MGMT.DB_DELETE_BATCH_SIZE,
       audit_trail_property_value => 100000 /* delete batch size */);
END;
/

---

SET_LAST_ARCHIVE_TIMESTAMP Procedure

This procedure sets a timestamp indicating when the audit records were last archived. The audit administrator provides the timestamp to be attached to the audit records. The CLEAN_AUDIT_TRAIL Procedure uses this timestamp to decide on the audit records to be deleted.

Syntax

DBMS_AUDIT_MGMT.SET_LAST_ARCHIVE_TIMESTAMP(
   audit_trail_type     IN PLS_INTEGER,
   last_archive_time    IN TIMESTAMP,
   rac_instance_number  IN PLS_INTEGER DEFAULT NULL) ;

Parameters

Usage Notes

The following usage notes apply:

• The last_archive_time must be specified in Coordinated Universal Time (UTC) when the audit trail types are AUDIT_TRAIL_AUD_STD or AUDIT_TRAIL_FGA_STD. This is because the database audit trails store the timestamps in UTC. UTC is also known as Greenwich Mean Time (GMT).

• The last_archive_time must be specified as the local time zone time when the audit trail types are AUDIT_TRAIL_OS or AUDIT_TRAIL_XML. The time zone must be the time zone of the machine where the OS or XML audit files were created. This is because the operating system audit files are cleaned based on the audit file's Last Modification Timestamp property. The Last Modification Timestamp property value is stored in the local time zone of the machine.

• The following audit_trail_type values for valid for this procedure:

  • AUDIT_TRAIL_AUD_STD

  • AUDIT_TRAIL_FGA_STD

  • AUDIT_TRAIL_OS

  • AUDIT_TRAIL_XML

• When using an Oracle Real Application Clusters (Oracle RAC) database, Oracle recommends that you use the Network Time Protocol (NTP) to synchronize individual Oracle RAC nodes.

Examples

The following example calls the SET_LAST_ARCHIVE_TIMESTAMP procedure to set the last archive timestamp for the operating system (OS) audit trail type on Oracle RAC instance 1. It uses the TO_TIMESTAMP function to convert a character string into a timestamp value.

A subsequent call to the CLEAN_AUDIT_TRAIL Procedure, with use_last_arch_timestamp set to TRUE, will delete all those OS audit files from the current AUDIT_FILE_DEST directory that were modified before 10-Sep-2007 14:10:10.0.

BEGIN
DBMS_AUDIT_MGMT.SET_LAST_ARCHIVE_TIMESTAMP(
   audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_OS,
   last_archive_time => TO_TIMESTAMP('10-SEP-0714:10:10.0','DD-MON-RRHH24:MI:SS.FF'),
   rac_instance_number => 1);
END;
/

---

SET_PURGE_JOB_INTERVAL Procedure

This procedure sets the interval at which the CLEAN_AUDIT_TRAIL Procedure is called for the purge job specified. The purge job must have already been created using the CREATE_PURGE_JOB Procedure.

Syntax

DBMS_AUDIT_MGMT.SET_PURGE_JOB_INTERVAL(
   audit_trail_purge_name      IN VARCHAR2,
   audit_trail_interval_value  IN PLS_INTEGER) ;

Parameters

Usage Notes

Use this procedure to modify the audit_trail_purge_interval parameter set using the CREATE_PURGE_JOB Procedure.

Examples

The following example calls the SET_PURGE_JOB_INTERVAL procedure to change the frequency at which the purge job called CLEANUP is invoked. The new interval is set to 24 hours.

BEGIN
DBMS_AUDIT_MGMT.SET_PURGE_JOB_INTERVAL(
  AUDIT_TRAIL_PURGE_NAME       => 'CLEANUP',
  AUDIT_TRAIL_INTERVAL_VALUE   => 24 );
END;
/

---

SET_PURGE_JOB_STATUS Procedure

This procedure enables or disables the specified purge job. The purge job must have already been created using the CREATE_PURGE_JOB Procedure.

Syntax

DBMS_AUDIT_MGMT.SET_PURGE_JOB_STATUS(
   audit_trail_purge_name    IN VARCHAR2,
   audit_trail_status_value  IN PLS_INTEGER) ;

Parameters

Examples

The following example calls the SET_PURGE_JOB_STATUS procedure to enable the CLEANUP purge job.

BEGIN
DBMS_AUDIT_MGMT.SET_PURGE_JOB_STATUS(
  audit_trail_purge_name      => 'CLEANUP',
  audit_trail_status_value    => DBMS_AUDIT_MGMT.PURGE_JOB_ENABLE);
END;
/