oracle的SYSAUX表空间满了怎么处理

清理SYSAUX表空间：

1. 创建临时表，保存近8天的数据

create table test.ash_bak_20220119 as select * from sys.WRH$_ACTIVE_SESSION_HISTORY where SAMPLE_TIME>=sysdate-9;
SQL> select count(*)  from test.ash_bak_20220119;
  COUNT(*)
----------
     12648

1 row selected.

2. 禁用AWR

exec dbms_workload_repository.modify_snapshot_settings(interval => 0);

3. truncate WRH$_ACTIVE_SESSION_HISTORY

TRUNCATE TABLE sys.WRH$_ACTIVE_SESSION_HISTORY;

4. truncate 完成后，重建 WRH$_ACTIVE_SESSION_HISTORY表的索引，并从备份表恢复数据

insert into sys.WRH$_ACTIVE_SESSION_HISTORY select * from test.ash_bak_20220119;
commit;

5. 查看索引状态(USABLE是未失效，UNUSABLE是失效)

set line 300 pages 200
col owner for a20
col index_name for a30
select index_owner,
index_name,
partition_name,
status,
tablespace_name,
last_analyzed
from dba_ind_partitions
where index_name in (select index_name
from dba_indexes
where table_name in ('WRH$_ACTIVE_SESSION_HISTORY')
and table_owner = 'SYS');

INDEX_OWNER		       INDEX_NAME		      PARTITION_NAME		     STATUS   TABLESPACE_NAME		     LAST_ANAL
------------------------------ ------------------------------ ------------------------------ -------- ------------------------------ ---------
SYS			       WRH$_ACTIVE_SESSION_HISTORY_PK WRH$_ACTIVE_3552434506_0	     USABLE   SYSAUX			     04-DEC-21
SYS			       WRH$_ACTIVE_SESSION_HISTORY_PK WRH$_ACTIVE_SES_MXDB_MXSN      USABLE   SYSAUX			     07-FEB-20

6. 如果索引失效重建索引（测试的时候是没有失效的，索引为本地索引）

ALTER INDEX SYS.WRH$_ACTIVE_SESSION_HISTORY_PK REBUILD PARTITION WRH$_ACTIVE_3552434506_0 tablespace SYSAUX;
ALTER INDEX SYS.WRH$_ACTIVE_SESSION_HISTORY_PK REBUILD PARTITION WRH$_ACTIVE_SES_MXDB_MXSN tablespace SYSAUX;

7. 启动AWR

exec dbms_workload_repository.modify_snapshot_settings(interval => 60);

8. 测试awr和ash可能正常生成
   —手动生成snapshot

exec dbms_workload_repository.create_snapshot;
@?/rdbms/admin/awrrpt
@?/rdbms/admin/ashrpt

9. 删除备份表

drop table test.ash_bak_20220119 purge;