基本环境
数据库：oracle 12.2 RAC
操作系统：unix&solaris 11.3
报错现像
今天处理别的问题查看告警日志偶然发现大量的报错，无法扩展SYSAUX表空间
于是登录系统，查看系统表空间使用情况，发现SYSAUX表空间用满了
查看SYSAUX表空间情况
使用SQL检查一下占用，
1 2 3 | SELECT occupant_name"Item",round(space_usage_kbytes/1024/1024,3)"Space Used (GB)",schema_name "Schema",move_procedure "MoveProcedure"FROM v$sysaux_occupantsORDER BY 2 Desc; |
返回如下：
再检查segment_names查看
1 2 3 4 | select * from (select segment_name,sum(bytes)/1024/1024 total_mb,tablespace_name from dba_segments where tablespace_name in('SYSTEM','SYSAUX') group by segment_name,tablespace_name order by 2 desc)where rownum |
返回如下：
释放表空间AUD$UNIFIED
需要用到Dbms包来处理
1 2 3 4 5 6 7 | BEGINDBMS_AUDIT_MGMT.CLEAN_AUDIT_TRAIL(audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_UNIFIED,container => DBMS_AUDIT_MGMT.CONTAINER_CURRENT,use_last_arch_timestamp => FALSE);END;/ |
use_last_arch_timestamp这个地方有两个选项：
-
USE_LAST_ARCH_TIMESTAMP: Enter either of the following settings:-
TRUE: Deletes audit records created before the last archive timestamp. To set the archive timestamp, see Step 3: Optionally, Set an Archive Timestamp for Audit Records. The default (and recommended) value is . Oracle recommends that you set to .TRUEUSE_LAST_ARCH_TIMESTAMPTRUE -
FALSE: Deletes all audit records without considering last archive timestamp. Be careful about using this setting, in case you inadvertently delete audit records that should not have been deleted.
-
处理完再次查看
清理之后会留下清理记录，可通过SQL查看
1 | 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%'; |
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