Linux AS 5.3   ORACLE10.2.0.4   RAC ,  3 Nodes 

Tue Feb 16 21:43:54 2010
Thread 1 advanced to log sequence 9230 (LGWR switch)
  Current log# 26 seq# 9230 mem# 0: /ocfs_ctrl_redo/mxdell/redo26.log
  Current log# 26 seq# 9230 mem# 1: /ocfs_data/mxdell/redo26.log
Tue Feb 16 21:44:50 2010
Errors in file /u01/product/admin/mxdell/udump/mxdell1_ora_15445.trc:
ORA-07445: exception encountered: core dump [ksxpunmap()+2742] [SIGSEGV] [unknown code] [0x000000000] [] []
Tue Feb 16 21:44:51 2010
Trace dumping is performing id=[cdmp_20100216214451]
Tue Feb 16 21:49:11 2010
Thread 1 advanced to log sequence 9231 (LGWR switch)
  Current log# 27 seq# 9231 mem# 0: /ocfs_ctrl_redo/mxdell/redo27.log
  Current log# 27 seq# 9231 mem# 1: /ocfs_data/mxdell/redo27.log
Tue Feb 16 21:53:45 2010
Thread 1 advanced to log sequence 9232 (LGWR switch)

Note: For additional ORA-7445 related information please read Note:211909.1

PURPOSE:

  This article provides information on one or more bugs that are 
  known to result in the given ORA-7445 error.



SUGGESTIONS:

  If the Known Issues section below does not help in terms of identifying
  a solution, please submit the trace files and alert.log to Oracle 
  Support Services for further analysis.

  Known Issues:

  Bug# 6123145   See Note:6123145.8
      Dump [ksxpunmap] in RAC
      Fixed: 10.2.0.4