Rollback segment problem?

From: FAI <leemingf_at_pacific.net.hk>
Date: Fri, 18 Aug 2000 10:14:10 +0800
Message-ID: <8ni64h$hqk$1@news.hk.linkage.net>

i've got the following message in the alert log :

Fri Aug 18 08:10:25 2000
Thread 1 advanced to log sequence 154789 Current log# 1 seq# 154789 mem# 0: /ufs6/dbdata/oracle/kmbrp/kmbrp_redo11 Current log# 1 seq# 154789 mem# 1: /ufs7/dbdata/oracle/kmbrp/kmbrp_redo12 Fri Aug 18 08:10:44 2000
Errors in file /oracle/app/db/admin/kmbrp/bdump/kmbrp_smon_17630.trc: ORA-01595: error freeing extent (0) of rollback segment (7)) ORA-01575: timeout waiting for space management resource Fri Aug 18 08:10:48 2000
Thread 1 advanced to log sequence 154790 Current log# 2 seq# 154790 mem# 0: /ufs6/dbdata/oracle/kmbrp/kmbrp_redo21 Current log# 2 seq# 154790 mem# 1: /ufs7/dbdata/oracle/kmbrp/kmbrp_redo22

Can anyone tell me what's the problem is? Received on Thu Aug 17 2000 - 21:14:10 CDT