[20230303]学习UNIFIED audit--定期清理AUDSYS.AUD$UNIFIED.txt

[20230303]学习UNIFIED audit--定期清理AUDSYS.AUD$UNIFIED.txt --//前面的学习包括手工操作整理AUDSYS.AUD$UNIFIED以及移动AUDSYS.AUD$UNIFIED到别的表空间. --//下面学习定期清理AUDSYS.AUD$UNIFIED --//参考: --//https://smarttechways.com/2020/06/19/purge-the-audit-records-with-truncate-or-dbms_audit_mgmt-package/ --//https://www.cnblogs.com/cqdba/p/13258891.html --// Create the scheduler job which purge the AUDSYS.AUD$UNIFIED table daily 1.环境: SYS@192.168.100.141:1521/dyhis> @ver1 SYS@192.168.100.141:1521/dyhis> @ pr ============================== PORT_STRING                   : x86_64/Linux 2.4.xx VERSION                       : 19.0.0.0.0 BANNER                        : Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production BANNER_FULL                   : Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production Version 19.9.0.0.0 BANNER_LEGACY                 : Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production CON_ID                        : 0 PL/SQL procedure successfully completed. 2.步骤: --//定时调度设置时间戳.执行DBMS_AUDIT_MGMT.SET_LAST_ARCHIVE_TIMESTAMP。 --//取月尾日期. SYS@192.168.100.141:1521/dyhis> select add_months(trunc(sysdate,'mm'),1),add_months(trunc(sysdate,'mm'),-2) from dual ; ADD_MONTHS(TRUNC(SY ADD_MONTHS(TRUNC(SY ------------------- ------------------- 2023-04-01 00:00:00 2023-01-01 00:00:00 --//仔细看了链接https://www.cnblogs.com/cqdba/p/13258891.html,感觉有点繁琐。 --//使用了DBMS_AUDIT_MGMT.CREATE_PURGE_JOB. --//根据我前面测试，操作最好直接删除整个分区，这样更加快捷。 --//索性我设置时间戳后马上执行清理操作，修改如下： BEGIN    DBMS_SCHEDULER.create_job    (       job_name          => 'JOB_PURGE_AUDIT_RECORDS'      ,job_type          => 'PLSQL_BLOCK'      ,job_action        => q'[BEGIN DBMS_AUDIT_MGMT.SET_LAST_ARCHIVE_TIMESTAMP(DBMS_AUDIT_MGMT.AUDIT_TRAIL_UNIFIED,add_months(trunc(sysdate,'mm'),-2)); DBMS_AUDIT_MGMT.CLEAN_AUDIT_TRAIL(AUDIT_TRAIL_TYPE=>DBMS_AUDIT_MGMT.AUDIT_TRAIL_UNIFIED,USE_LAST_ARCH_TIMESTAMP=>TRUE); END;]'      ,--  start_date => add_months(trunc(sysdate,'mm'),1),       start_date        => SYSDATE      ,--    repeat_interval => 'freq=monthly; byhour=7; byminute=50; bysecond=0;',       repeat_interval   => 'freq=monthly;bydate=0101,0201,0301,0401,0501,0601,0701,0801,0901,1001,1101,1201;byhour=8; byminute=50; bysecond=0;'      ,end_date          => NULL      ,enabled           => TRUE      ,comments          => 'Update last_archive_timestamp and clean unified audit trail'    ); END; / --//根据需要设定保留的时间段,我设置保留最少2个月. 如果保留3个月就是-3. SYS@192.168.100.141:1521/dyhis> select * from  DBA_AUDIT_MGMT_LAST_ARCH_TS; AUDIT_TRAIL          RAC_INSTANCE LAST_ARCHIVE_TS                   DATABASE_ID CONTAINER_GUID -------------------- ------------ --------------------------------- ----------- --------------------------------- UNIFIED AUDIT TRAIL             0 2023-01-01 00:00:00.000000 +00:00  4090373436 B60D258AC2D9EF54E0532A63A8C09F1F SYS@192.168.100.141:1521/dyhis> select start_date,LAST_START_DATE,LAST_RUN_DURATION,NEXT_RUN_DATE from dba_scheduler_jobs where job_name= 'JOB_PURGE_AUDIT_RECORDS'      @pr ============================== START_DATE                    : 2023-03-03 09:07:24.000000 +08:00 LAST_START_DATE               : LAST_RUN_DURATION             : NEXT_RUN_DATE                 : 2023-04-01 08:50:00.000000 +08:00 PL/SQL procedure successfully completed. --//不知道是否时区会有影响.前面的+0时区,后面的+08时区. SYS@192.168.100.141:1521/dyhis> select max(event_timestamp) from AUDSYS.AUD$UNIFIED; MAX(EVENT_TIMESTAMP) --------------------------------------------------------------------------- 2023-03-03 01:12:40.778111 SYS@192.168.100.141:1521/dyhis> select max(event_timestamp) from AUDSYS.AUD$UNIFIED; MAX(EVENT_TIMESTAMP) --------------------------------------------------------------------------- 2023-03-03 01:12:46.815100 SYS@192.168.100.141:1521/dyhis> select SYSDATE from dual ; SYSDATE ------------------- 2023-03-03 09:13:10 --//很明显EVENT_TIMESTAMP改用+0时区. SYS@192.168.100.141:1521/dyhis> select * from DBA_AUDIT_MGMT_CLEANUP_JOBS; no rows selected --//没有采用DBMS_AUDIT_MGMT.CREATE_PURGE_JOB方式. --//相关视图：内容来自https://www.cnblogs.com/cqdba/p/13258891.html --//DBA_AUDIT_MGMT_CLEAN_EVENTS      显示传统(即非统一)审计跟踪的清除事件的历史记录 --//统计审计的清除记录 select * from UNIFIED_AUDIT_TRAIL   --//where OBJECT_NAME='DBMS_AUDIT_MGMT' and OBJECT_SCHEMA='SYS' AND SQL_TEXT LIKE '%DBMS_AUDIT_MGMT.CLEAN_AUDIT_TRAIL%'; --//DBA_AUDIT_MGMT_CLEANUP_JOBS      显示当前配置的审核跟踪清除作业 --//DBA_AUDIT_MGMT_CONFIG_PARAMS     显示DBMS_AUDIT_MGMTPL / SQL程序包 使用的当前配置的审核跟踪属性 --//DBA_AUDIT_MGMT_LAST_ARCH_TS      显示为审计跟踪清除设置的最后一个归档时间戳记