oracle的sysaux使用量排查sql

水1篇工具sql

SELECT OCCUPANT_NAME,
       OCCUPANT_DESC,
       SCHEMA_NAME,
       MOVE_PROCEDURE,
       MOVE_PROCEDURE_DESC,
       SPACE_USAGE_KBYTES SPACE_USAGE_KB,
       ROUND(SPACE_USAGE_KBYTES / 1024 / 1024,2)  SPACE_USAGE_G
  FROM V$SYSAUX_OCCUPANTS D
 ORDER BY D.SPACE_USAGE_KBYTES DESC;

分享些经验：

1、一般的system爆满是audit_trail=db的audit日志。truncate table sys.aud可以快速清理。如果有使用audit日志。正常做法应该是用过程把其挪到其他表空间，然后配置删除策略

挪动用的proc

 BEGIN
 DBMS_AUDIT_MGMT.set_audit_trail_location(
 audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_AUD_STD,
 audit_trail_location_value => 'AUDIT_TBS');
 END;
 /

可以再配置以下过程自动清理

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

2、sysaux的爆满一般则是addm也就是俗称的awr组件的问题。可以用以下过程来清理快照

execute dbms_workload_repository.drop_snapshot_range(low,high,dbid);