database slow after Index compute statistics
442562Nov 29 2006 — edited Nov 29 2006Dear All,
Since 2 days back after executing Analyze Index compute objects to increase the response time some programs from my application have become very slow.
After seeing this behaviour I went ahead and did a Analyze table compute statistic again . Even after doing this the behaviour has remained the same . Some users have been complaining (becoz the slowness has effected only some tables and not the whole database).
I checked sys.v_$session_longops and got this output
OPNAME TARGET ELAPSED_SECONDS
NULL 53 596792483
NULL 53 596793670
¥Á 3248826740 596793669
NULL 53 596793624
NULL NULL 596800369
NULL 1 596796740
NULL 1732526816 596472777
Table Scan PO8.ACC_LEDGER 9
Table Scan PO8.INVENTORY_LEDGER 26
Sort Output NULL 7
Sort/Merge NULL 15
Sort/Merge NULL 66
Table Scan PO8.INVENTORY_LEDGER 12
Table Scan PO8.ACC_LEDGER 9
NULL 1725513472 0
NULL 3361240696 0
NULL 3361796632 0
NULL 22 596792484
NULL 1730819772 596800386
NBIAAT56020010ä (stale) obj# 3363169460 596800605
ýÐ 3506279036 596799303
NULL NULL 596800634
What could have happened.
In the ini I have set
optimizer mode = Choose
db_file_multiblock_read_count= 8
Sapna