自动清理oracle数据库统一审计记录方案。
查询表空间使用率
SQL> Col tablespace_name for a30
Col used_pct for a10
Set line 120 pages 120
select total.tablespace_name,round(total.MB, 2) as Total_MB,round(total.MB - free.MB, 2) as Used_MB,round((1-free.MB / total.MB)* 100, 2) || '%' as Used_Pct
from (
select tablespace_name, sum(bytes) /1024/1024 as MB
from dba_free_space group by tablespace_name) free,
(select tablespace_name, sum(bytes) / 1024 / 1024 as MB
from dba_data_files group by tablespace_name) total
where free.tablespace_name = total.tablespace_name
order by 4
/SQL> SQL> SQL> 2 3 4 5 6 7 8 9
TABLESPACE_NAME TOTAL_MB USED_MB USED_PCT
------------------------------ ---------- ---------- ----------
UNDOTBS1 4215 30.25 .72%
BICD 8192 1933.25 23.6%
SYSTEM 4096 1021.63 24.94%
LOGMINER_TBS 25 1 4%
OGG_DATA 20 9 45%
BAKBICD 13744 10615.44 77.24%
USERS 4990 4751.38 95.22%
SYSAUX 32767.98 32708.3 99.82%
8 rows selected.
SQL> col SEGMENT_NAME for a40
col TABLESPACE_NAME for a12
set line 200 pages 23
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 <=20;
SQL> SQL> SQL> 2 3 4
SEGMENT_NAME TOTAL_MB TABLESPACE_N
---------------------------------------- ---------- ------------
AUD$UNIFIED 31284 SYSAUX
IDL_UB1$ 392 SYSTEM
I_WRI$_OPTSTAT_H_OBJ#_ICOL#_ST 128 SYSAUX
WRI$_OPTSTAT_HISTGRM_HISTORY 91.0625 SYSAUX
SYS_LOB0000008706C00008$$ 72.1875 SYSAUX
SYS_LOB0000064076C00006$$ 72.1875 SYSAUX
SYS_LOB0000072921C00006$$ 72.125 SYSAUX
I_WRI$_OPTSTAT_H_ST 72 SYSAUX
C_TOID_VERSION# 48 SYSTEM
SYS_LOB0000007422C00004$$ 40.1875 SYSAUX
SOURCE$ 38 SYSTEM
SYS_LOB0000011147C00038$$ 32.1875 SYSAUX
C_OBJ#_INTCOL# 31 SYSTEM
IDL_UB2$ 30 SYSTEM
SYS_LOB0000076291C00111$$ 29 SYSTEM
WRH$_SYSMETRIC_HISTORY_INDEX 26.4375 SYSAUX
WRH$_SYSSTAT_PK 24.4375 SYSAUX
WRH$_EVENT_HISTOGRAM_PK 24.375 SYSAUX
WRH$_SYSMETRIC_HISTORY 24.3125 SYSAUX
SYS_LOB0000066421C00004$$ 24.1875 SYSAUX
20 rows selected.
SQL> col item for a25
col schema for a20
set line 200 pages 200
SELECT occupant_name "Item",
space_usage_kbytes / 1048576 "Space Used (GB)",
schema_name "Schema",
move_procedure "Move Procedure"
FROM v$sysaux_occupants
ORDER BY 2 desc;SQL> SQL> SQL> 2 3 4 5 6
Item Space Used (GB) Schema Move Procedure
------------------------- --------------- -------------------- ----------------------------------------------------------------
AUDSYS 30.5524292 AUDSYS DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_LOCATION
SM/AWR .413879395 SYS
SM/OPTSTAT .338745117 SYS
SDO .196411133 MDSYS MDSYS.MOVE_SDO
SM/ADVISOR .136047363 SYS
XDB .066955566 XDB XDB.DBMS_XDB_ADMIN.MOVEXDB_TABLESPACE
SM/OTHER .049743652 SYS
设置定时任务自动清理
参考：How To Purge The UNIFIED AUDIT TRAIL (Doc ID 1582627.1)
BEGIN
DBMS_AUDIT_MGMT.CREATE_PURGE_JOB(
audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_UNIFIED,
audit_trail_purge_interval => 24 /* hours */,
audit_trail_purge_name => 'CLEANUP_AUDIT_TRAIL_UNIFIED',
use_last_arch_timestamp => TRUE);
END;
/
BEGIN
DBMS_SCHEDULER.create_job (
job_name => 'audit_last_archive_time',
job_type => 'PLSQL_BLOCK',
job_action => 'BEGIN
DBMS_AUDIT_MGMT.SET_LAST_ARCHIVE_TIMESTAMP(DBMS_AUDIT_MGMT.AUDIT_TRAIL_UNIFIED, TRUNC(SYSTIMESTAMP)-30);
END;',
start_date => SYSTIMESTAMP,
repeat_interval => 'freq=daily; byhour=0; byminute=0; bysecond=0;',
end_date => NULL,
enabled => TRUE,
comments => 'Automatically set audit last archive time.');
END;
/