Hello Everyone, We did a switchover to the backup site past weekend and then switched back to the primary site. After the switchback, the recovery process on the standby site failed with the ORA 600 error message. We restarted the database and started the recovery with the "RECOVER STAND BY DATABSAE" but had the same error messages. Any suggestions? ------------------------------------------------------------------------ --------------------------------------------------- Media Recovery Log /u06/arch/rbtp/arch_460544197_1_153892.arc Mon Dec 13 09:10:44 2010 Errors in file /u01/app/oracle/admin/rbtp/bdump/rbtp1/rbtp1_p002_761271.trc: ORA-00339: archived log does not contain any redo ORA-00334: archived log: '/u04/oradata/rbtp/redo_rbtp1_03a.log' Mon Dec 13 09:10:44 2010 Errors in file /u01/app/oracle/admin/rbtp/bdump/rbtp1/rbtp1_p002_761271.trc: ORA-00600: internal error code, arguments: [kddummy_blkchk], [15], [186825], [6401], [], [], [], [] Mon Dec 13 09:10:57 2010 Errors in file /u01/app/oracle/admin/rbtp/bdump/rbtp1/rbtp1_p002_761271.trc: ORA-00600: internal error code, arguments: [kddummy_blkchk], [15], [186825], [6401], [], [], [], [] Mon Dec 13 09:11:03 2010 Trace dumping is performing id=[cdmp_20101213091103] Mon Dec 13 09:11:03 2010 Errors in file /u01/app/oracle/admin/rbtp/bdump/rbtp1/rbtp1_p002_761271.trc: ORA-10562: Error occurred while applying redo to data block (file# 15, block# 186825) ORA-10564: tablespace SYSAUX ORA-01110: data file 15: '/u01/oradata/rbtp/sysaux_01.dbf' ORA-10561: block type 'TRANSACTION MANAGED INDEX BLOCK', data object# 231764 ORA-00600: internal error code, arguments: [kddummy_blkchk], [15], [186825], [6401], [], [], [], [] Mon Dec 13 09:11:03 2010 Errors with log /u06/arch/rbtp/arch_460544197_1_153892.arc Mon Dec 13 09:11:03 2010 Media Recovery failed with error 12801 ORA-283 signalled during: ALTER DATABASE RECOVER LOGFILE '/u06/arch/rbtp/arch_460544197_1_153892.arc' ... Mon Dec 13 09:11:03 2010 ALTER DATABASE RECOVER CANCEL ORA-1112 signalled during: ALTER DATABASE RECOVER CANCEL ... Mon Dec 13 09:24:47 2010