RBS waits

Hi
Te following is the status of my database. It has been running for 3 days now. Though i have 55 rollback segments , i always seem to have contention for it. transactions_per_rollback_segment = 10, and the rollback segments have initial 5m next 5m minextents 20. There are about 100 users connected at any point of time and around 30 - 40 concurrent transactions. Where is the problem?

SQL> select * from v$waitstat;

CLASS                   COUNT       TIME


------------------ ---------- ----------

data block           18024355   24968386
sort block                  0          0
save undo block             0          0
segment header             93        665
save undo header            0          0
free list                   0          0
extent map                  0          0
bitmap block                0          0
bitmap index block          0          0
unused                      0          0
system undo header          0          0

CLASS                   COUNT       TIME


------------------ ---------- ----------

system undo block           0          0
undo header              1827     121484
undo block              13504      43563

Please help.

Ashok Received on Wed Aug 07 2002 - 08:03:10 CDT