查看备库日志：
LOGMINER: Read buffers: 16 LOGMINER: Memory LWM: limit 10M, LWM 24M, 80% LOGMINER: Memory Release Limit: 1M RFS LogMiner: Registered logfile [/u01/app/oracle/fast_recovery_area/DG2/foreign_archivelog/DG1/2014_04_29/o1_mf_1_82_9ozghfdo_.arc] to LogMiner session id [1] RFS LogMiner: Registered logfile [/u01/app/oracle/fast_recovery_area/DG2/foreign_archivelog/DG1/2014_04_29/o1_mf_1_81_9ozghffw_.arc] to LogMiner session id [1] Tue Apr 29 22:40:47 2014 Primary database is in MAXIMUM PERFORMANCE mode RFS[4]: Assigned to RFS process 3779 RFS[4]: Selected log 4 for thread 1 sequence 84 dbid 1756848898 branch 843517891 Tue Apr 29 22:40:48 2014 RFS[5]: Assigned to RFS process 3777 RFS[5]: Opened log for thread 1 sequence 79 dbid 1756848898 branch 843517891 RFS LogMiner: Registered logfile [/u01/app/oracle/fast_recovery_area/DG2/foreign_archivelog/DG1/2014_04_29/o1_mf_1_79_9ozghhy9_.arc] to LogMiner session id [1] Tue Apr 29 22:40:50 2014 LOGMINER: session#=1 (Logical_Standby$), reader MS00 pid=38 OS id=3781 sid=44 started Tue Apr 29 22:40:50 2014 LOGMINER: session#=1 (Logical_Standby$),builder MS01 pid=39 OS id=3783 sid=45 started Tue Apr 29 22:40:50 2014 LOGMINER: session#=1 (Logical_Standby$), preparer MS02 pid=40 OS id=3785 sid=48 started Tue Apr 29 22:40:50 2014 RFS LogMiner: RFS id [3787] assigned as thread [1] PING handler Tue Apr 29 22:40:51 2014 RFS[6]: Assigned to RFS process 3789 RFS[6]: Selected log 5 for thread 1 sequence 83 dbid 1756848898 branch 843517891 Tue Apr 29 22:40:55 2014 RFS LogMiner: Registered logfile [/u01/app/oracle/fast_recovery_area/DG2/foreign_archivelog/DG1/2014_04_29/o1_mf_1_83_9ozghp29_.arc] to LogMiner session id [1] LOGMINER: Begin mining logfile during dictionary load for session 1 thread 1 sequence 79, /u01/app/oracle/fast_recovery_area/DG2/foreign_archivelog/DG1/2014_04_29/o1_mf_1_79_9ozghhy9_.arc Tue Apr 29 22:41:09 2014 Thread 1 advanced to log sequence 2 (LGWR switch) Current log# 2 seq# 2 mem# 0: /u01/app/oracle/oradata/dg/DG2/onlinelog/o1_mf_2_9ozd8zc1_.log Tue Apr 29 22:41:11 2014 Archived Log entry 1 added for thread 1 sequence 1 ID 0x47d6f0d0 dest 1: Tue Apr 29 22:41:20 2014 Thread 1 advanced to log sequence 3 (LGWR switch) Current log# 3 seq# 3 mem# 0: /u01/app/oracle/oradata/dg/DG2/onlinelog/o1_mf_3_9ozd904o_.log Tue Apr 29 22:41:22 2014 Archived Log entry 2 added for thread 1 sequence 2 ID 0x47d6f0d0 dest 1: Thread 1 cannot allocate new log, sequence 4 Checkpoint not complete Current log# 3 seq# 3 mem# 0: /u01/app/oracle/oradata/dg/DG2/onlinelog/o1_mf_3_9ozd904o_.log Thread 1 advanced to log sequence 4 (LGWR switch) Current log# 1 seq# 4 mem# 0: /u01/app/oracle/oradata/dg/DG2/onlinelog/o1_mf_1_9ozd8yhq_.log Tue Apr 29 22:41:31 2014 Archived Log entry 3 added for thread 1 sequence 3 I