Hi,
I noticed an error in the alert.log file and was wonderingh why and what should i do to prevent this in future

Alert.Log Entry
-----------------
Mon Oct 22 10:32:46 2001
Thread 1 advanced to log sequence 22072
Current log# 2 seq# 22072 mem# 0: C:\ORANT\DATABASE\LOGSID92.ORA
Current log# 2 seq# 22072 mem# 1: C:\ORANT\DATABASE\LOGSID92A.ORA
Mon Oct 22 10:36:43 2001

Errors in file C:\ORANT\rdbms80\trace\sid9SMON.TRC:
ORA-01595: error freeing extent (1) of rollback segment (7))
ORA-01594: attempt to wrap into rollback segment (7) extent (1) which is being freed


Mon Oct 22 10:49:40 2001
Thread 1 advanced to log sequence 22073
Current log# 1 seq# 22073 mem# 0: C:\ORANT\DATABASE\LOGSID91.ORA
Current log# 1 seq# 22073 mem# 1: C:\ORANT\DATABASE\LOGSID91A.ORA
Mon Oct 22 10:52:28 2001

sid9SMON.TRC Entry
-----------------------

*** SESSION ID:(5.1) 2001.10.22.10.36.42.828
*** 2001.10.22.10.36.42.828
SMON: following errors trapped and ignored:
ORA-01595: error freeing extent (1) of rollback segment (7))
ORA-01594: attempt to wrap into rollback segment (7) extent (1) which is being freed

Please Suggest

Ronnie