Hi,
In one of the production system SYSAUX tablespace is growing rapidly,the statistics retention period for 31 days, but the statistics exists since last year. Optimizer Statistics History size is 77GB.Oracle version is 11.2.0.2.0.
SQL> select trunc(SAVTIME),count(1) from WRI$_OPTSTAT_HISTHEAD_HISTORY group by trunc(SAVTIME) order by 1;
| 26-JUL-13 | 93263 |
| 27-JUL-13 | 109740 |
| 28-JUL-13 | 77648 |
559 rows selected.
The data exists since last year
SQL> select occupant_desc, space_usage_kbytes from v$sysaux_occupants where space_usage_kbytes > 0 order by space_usage_kbytes desc ;
OCCUPANT_DESC SPACE_USAGE_KBYTES
---------------------------------------------------------------- ------------------
Server Manageability - Optimizer Statistics History 81431168
Server Manageability - Automatic Workload Repository 7363072
Server Manageability - Advisor Framework 44288
LogMiner 12544
Server Manageability - Other Components 8896
Transaction Layer - SCN to TIME mapping 3328
SQL Management Base Schema 1728
PL/SQL Identifier Collection 1600
Analytical Workspace Object Table 1536
OLAP API History Tables 1536
Logical Standby 1408
Oracle Streams 1024
Enterprise Manager Monitoring User 896
Unified Job Scheduler 384
Automated Maintenance Tasks 320
15 rows selected.
If we execute the command exec dbms_stats.purge_stats(sysdate-31);
It will delete the statistics older than 31 days.
Please suggest after deleting the old statistics which actions required.
Regards
Chandrashekar