巡检的时候发现SYSAUX表空间使用率超过了80%，将近达到了60G:
TABLESPACE_NAME Allocated (MB) Free (MB) Used (MB) PERCENTFREE
-------------------- -------------- ---------- ---------- -----------
SYSAUX 60440 7907 52532 14
set linesize 200
col owner for a15
col segment_name for a30
col segment_type for a20
col partition_name for a20
select owner,segment_name,segment_type,partition_name,bytes/1024/1024/1024 size_gb from dba_segments where tablespace_name='SYSAUX' and bytes/1024/1024/1024 > '1';
OWNER SEGMENT_NAME SEGMENT_TYPE PARTITION_NAME SIZE_GB
--------------- ------------------------------ -------------------- -------------------- ----------
SYS WRI$_ADV_OBJECTS TABLE 20.9179688
SYS WRI$_ADV_OBJECTS_PK INDEX 7.24707031
SYS WRI$_ADV_OBJECTS_IDX_01 INDEX 10.9150391
SYS WRI$_ADV_OBJECTS_IDX_02 INDEX 9.17773438
SYS HEATMAP SYSTEM STATISTICS 1.27246094
最大的表：WRI$_ADV_OBJECTS
清理WRI$_ADV_OBJECTS相关数据
--表越大，索引越大的执行时间越长，耐心等待
DECLARE
v_tname VARCHAR2(32767);
BEGIN
v_tname := 'AUTO_STATS_ADVISOR_TASK';
DBMS_STATS.DROP_ADVISOR_TASK(v_tname);
END;
/
EXEC DBMS_STATS.INIT_PACKAGE();
ALTER TABLE WRI$_ADV_OBJECTS MOVE;
ALTER INDEX WRI$_ADV_OBJECTS_IDX_01 REBUILD;
ALTER INDEX WRI$_ADV_OBJECTS_PK REBUILD;
--禁用Optimizer Statistics Advisor Task
DECLARE
filter1 CLOB;
BEGIN
filter1 := DBMS_STATS.CONFIGURE_ADVISOR_RULE_FILTER('AUTO_STATS_ADVISOR_TASK','EXECUTE',NULL,'DISABLE');
END;
/
--查看保留时间
col task_name for a30
col parameter_name for a30
col parameter_value for a10
select task_name,parameter_name, parameter_value FROM DBA_ADVISOR_PARAMETERS WHERE task_name='AUTO_STATS_ADVISOR_TASK' and parameter_name='EXECUTION_DAYS_TO_EXPIRE';
--修改保留时间 10天
BEGIN
DBMS_SQLTUNE.SET_TUNING_TASK_PARAMETER(task_name => 'AUTO_STATS_ADVISOR_TASK', parameter => 'EXECUTION_DAYS_TO_EXPIRE', value => 10);
END;
/
