DBA技巧类每日一文
查看数据库日志的时候你还需要自己去找目录么，学会使用ADRCI就好了。我一般会怎么用的，不妨你也试试啊。adrci 其实有很多我们可以研究的地方，help一下可以自学哦。
<roidb01:orcl:/home/oracle>$adrci ADRCI: Release 12.1.0.2.0 - Production on Sat Dec 16 22:16:44 2017 copyright (c) 1982,2014,Oracle and/or its affiliates. All rights reserved. ADR base = "/u01/app/oracle" adrci> show home ADR Homes: diag/rdbms/orcl/orcl diag/clients/user_oracle/host_530034364_82 diag/tnslsnr/roidb01/listener adrci> set home diag/rdbms/orcl/orcl adrci> show home ADR Homes: diag/rdbms/orcl/orcl adrci> show alert -tail -f 2017-12-16 22:04:40.567000 +08:00 Thread 1 advanced to log sequence 214 (LGWR switch) Current log# 2 seq# 214 mem# 0: +DATADG/ORCL/ONLINELOG/group_2.263.954623037 ARC3: Standby redo logfile selected for thread 1 sequence 209 for destination LOG_ARCHIVE_DEST_2 Archived Log entry 1130 added for thread 1 sequence 213 ID 0x58d68eb4 dest 1: ARC2: Standby redo logfile selected for thread 1 sequence 213 for destination LOG_ARCHIVE_DEST_2 2017-12-16 22:06:43.285000 +08:00 Destination LOG_ARCHIVE_DEST_2 is SYNCHRONIZED LGWR: Standby redo logfile selected for thread 1 sequence 215 for destination LOG_ARCHIVE_DEST_2 Thread 1 advanced to log sequence 215 (LGWR switch) Current log# 3 seq# 215 mem# 0: +DATADG/ORCL/ONLINELOG/group_3.264.954623041 Archived Log entry 1135 added for thread 1 sequence 214 ID 0x58d68eb4 dest 1: 2017-12-16 22:06:51.692000 +08:00 Thread 1 cannot allocate new log,sequence 216 Checkpoint not complete Current log# 3 seq# 215 mem# 0: +DATADG/ORCL/ONLINELOG/group_3.264.954623041 2017-12-16 22:06:53.389000 +08:00 LGWR: Standby redo logfile selected for thread 1 sequence 216 for destination LOG_ARCHIVE_DEST_2 Thread 1 advanced to log sequence 216 (LGWR switch) Current log# 1 seq# 216 mem# 0: +DATADG/ORCL/ONLINELOG/group_1.262.954623021 Thread 1 cannot allocate new log,sequence 217 Checkpoint not complete Current log# 1 seq# 216 mem# 0: +DATADG/ORCL/ONLINELOG/group_1.262.954623021 Archived Log entry 1137 added for thread 1 sequence 215 ID 0x58d68eb4 dest 1: 2017-12-16 22:06:56.405000 +08:00 LGWR: Standby redo logfile selected for thread 1 sequence 217 for destination LOG_ARCHIVE_DEST_2 Thread 1 advanced to log sequence 217 (LGWR switch) Current log# 2 seq# 217 mem# 0: +DATADG/ORCL/ONLINELOG/group_2.263.954623037 LGWR: Standby redo logfile selected for thread 1 sequence 218 for destination LOG_ARCHIVE_DEST_2 Thread 1 advanced to log sequence 218 (LGWR switch) Current log# 3 seq# 218 mem# 0: +DATADG/ORCL/ONLINELOG/group_3.264.954623041 Archived Log entry 1140 added for thread 1 sequence 216 ID 0x58d68eb4 dest 1: Archived Log entry 1141 added for thread 1 sequence 217 ID 0x58d68eb4 dest 1: ^CDIA-48223: Interrupt Requested - Fetch Aborted - Return Code [1] [ALERT_EXT] adrci> adrci> adrci> exit <roidb01:orcl:/home/oracle>$adrci ADRCI: Release 12.1.0.2.0 - Production on Sat Dec 16 22:17:47 2017 copyright (c) 1982,Oracle and/or its affiliates. All rights reserved. ADR base = "/u01/app/oracle" adrci> show alert -tail -f DIA-48449: Tail alert can only apply to single ADR home adrci> show home ADR Homes: diag/rdbms/orcl/orcl diag/clients/user_oracle/host_530034364_82 diag/tnslsnr/roidb01/listener adrci> set home diag/rdbms/orcl/orcl adrci> show alert -tail -f 2017-12-16 22:04:40.567000 +08:00 Thread 1 advanced to log sequence 214 (LGWR switch) Current log# 2 seq# 214 mem# 0: +DATADG/ORCL/ONLINELOG/group_2.263.954623037 ARC3: Standby redo logfile selected for thread 1 sequence 209 for destination LOG_ARCHIVE_DEST_2 Archived Log entry 1130 added for thread 1 sequence 213 ID 0x58d68eb4 dest 1: ARC2: Standby redo logfile selected for thread 1 sequence 213 for destination LOG_ARCHIVE_DEST_2 2017-12-16 22:06:43.285000 +08:00 Destination LOG_ARCHIVE_DEST_2 is SYNCHRONIZED LGWR: Standby redo logfile selected for thread 1 sequence 215 for destination LOG_ARCHIVE_DEST_2 Thread 1 advanced to log sequence 215 (LGWR switch) Current log# 3 seq# 215 mem# 0: +DATADG/ORCL/ONLINELOG/group_3.264.954623041 Archived Log entry 1135 added for thread 1 sequence 214 ID 0x58d68eb4 dest 1: 2017-12-16 22:06:51.692000 +08:00 Thread 1 cannot allocate new log,sequence 217 Checkpoint not complete Current log# 1 seq# 216 mem# 0: +DATADG/ORCL/ONLINELOG/group_1.262.954623021 Archived Log entry 1137 added for thread 1 sequence 215 ID 0x58d68eb4 dest 1: 2017-12-16 22:06:56.405000 +08:00 LGWR: Standby redo logfile selected for thread 1 sequence 217 for destination LOG_ARCHIVE_DEST_2 Thread 1 advanced to log sequence 217 (LGWR switch) Current log# 2 seq# 217 mem# 0: +DATADG/ORCL/ONLINELOG/group_2.263.954623037 LGWR: Standby redo logfile selected for thread 1 sequence 218 for destination LOG_ARCHIVE_DEST_2 Thread 1 advanced to log sequence 218 (LGWR switch) Current log# 3 seq# 218 mem# 0: +DATADG/ORCL/ONLINELOG/group_3.264.954623041 Archived Log entry 1140 added for thread 1 sequence 216 ID 0x58d68eb4 dest 1: Archived Log entry 1141 added for thread 1 sequence 217 ID 0x58d68eb4 dest 1:
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