日志报错：
Wed Jun 24 18:09:17 2015
Errors in file /home/oradba/oracle/diag/rdbms/yjfcdbst/yjfcdb/trace/yjfcdb_pr01_4957.trc  (incident=288241):
ORA-00600: internal error code, arguments: [krr_assemble_cv_3], [8], [], [], [], [], [], [], [], [], [], []
Incident details in: /home/oradba/oracle/diag/rdbms/yjfcdbst/yjfcdb/incident/incdir_288241/yjfcdb_pr01_4957_i288241.trc
Wed Jun 24 18:10:33 2015
Dumping diagnostic data in directory=[cdmp_20150624181033], requested by (instance=1, osid=4957 (PR01)), summary=[incident=288241].
Wed Jun 24 18:10:34 2015
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Slave exiting with ORA-600 exception
Errors in file /home/oradba/oracle/diag/rdbms/yjfcdbst/yjfcdb/trace/yjfcdb_pr01_4957.trc:
ORA-00600: internal error code, arguments: [krr_assemble_cv_3], [8], [], [], [], [], [], [], [], [], [], []
Wed Jun 24 18:10:34 2015
Errors in file /home/oradba/oracle/diag/rdbms/yjfcdbst/yjfcdb/trace/yjfcdb_mrp0_4953.trc  (incident=288225):
ORA-00600: internal error code, arguments: [krr_assemble_cv_3], [8], [], [], [], [], [], [], [], [], [], []
Incident details in: /home/oradba/oracle/diag/rdbms/yjfcdbst/yjfcdb/incident/incdir_288225/yjfcdb_mrp0_4953_i288225.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Recovery Slave PR01 previously exited with exception 600
Dumping diagnostic data in directory=[cdmp_20150624181035], requested by (instance=1, osid=4953 (MRP0)), summary=[incident=288225].
Wed Jun 24 18:10:36 2015
MRP0: Background Media Recovery terminated with error 448
Errors in file /home/oradba/oracle/diag/rdbms/yjfcdbst/yjfcdb/trace/yjfcdb_pr00_4955.trc:
ORA-00448: normal completion of background process
Managed Standby Recovery not using Real Time Apply
Recovery interrupted!
Wed Jun 24 18:10:36 2015
Sweep [inc][288241]: completed
Sweep [inc][288225]: completed
Sweep [inc2][288241]: completed
Sweep [inc2][288225]: completed
Recovered data files to a consistent state at change 2530669787
MRP0: Background Media Recovery process shutdown (yjfcdb)

重新启动备库后正常。
查看MOS 发现是一个BUG如下，影响 11.2.0.1 11.2.0.2 11.2.0.3

补丁程序13737746: MRP0: BACKGROUND MEDIA RECOVERY TERMINATED

也可以通过重启MRP进程来解决。

记录于此