FAL[client]: Failed to request gap sequence GAP - thread 1 sequence 29-29
一:问题描述
主备库所在机器都重启后,rac(主库)开机自动启动,但备库(单实例)不是开机启动,现已手工启动到mount,并已在备库上alter database recover standby database disconnect from session;。
发现主库归档日志无法同步到备库:
rac1:
rac2:
备库:
--奇怪的是,v$archive_gap竟然还为空。
查看报警日志:
二:解决办法
首先检查一下备库监听是否启动(当状态为‘ready’,表示已经启动)
如果监听未启动,则启动监听:lsnrctl start即可。
如果监听已经启动,则:
手工把缺的日志从主库scp/rcp拷过来,然后alter database register logfile.
三:具体步骤
比如下面是应该拷贝的日志:
+DATA/prod/1_29_856078807.arc 29 1
+DATA/prod/2_14_856078807.arc 14 2
+DATA/prod/1_30_856078807.arc 30 1
+DATA/prod/2_15_856078807.arc 15 2
+DATA/prod/2_16_856078807.arc 16 2
1:使用RMAN从ASM设备中拷贝出来所需归档文件
run {
copy archivelog '+DATA/PROD/1_29_856078807.arc' to '/home/oracle/1_29_856078807.arc';
copy archivelog '+DATA/PROD/1_30_856078807.arc' to '/home/oracle/1_30_856078807.arc';
copy archivelog '+DATA/prod/2_14_856078807.arc' to '/home/oracle/2_14_856078807.arc';
copy archivelog '+DATA/prod/2_15_856078807.arc' to '/home/oracle/2_15_856078807.arc';
copy archivelog '+DATA/prod/2_16_856078807.arc' to '/home/oracle/2_16_856078807.arc';
}
Starting backup at 27-AUG-14
using channel ORA_DISK_1
channel ORA_DISK_1: starting archive copy
input archive log thread=1 sequence=29 recid=82 stamp=856665609
output filename=/home/oracle/1_29_856078807.arc recid=89 stamp=856669631
channel ORA_DISK_1: archivelog copy complete, elapsed time: 00:00:02
Finished backup at 27-AUG-14
……
2:在备库查看归档路径
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination /arch/sdyprod
Oldest online log sequence 0
Next log sequence to archive 0
Current log sequence 0
3:在主库将未同步的归档日志拷贝到备库
[oracle@rac1 ~]$ scp 2* 192.168.8.225:/arch/sdyprod/
oracle@192.168.8.225's password:
2_14_856078807.arc 100% 1024 1.0KB/s 00:00
2_15_856078807.arc 100% 121KB 120.5KB/s 00:00
2_16_856078807.arc 100% 20KB 20.0KB/s 00:00
[oracle@rac1 ~]$ scp 1* 192.168.8.225:/arch/sdyprod/
oracle@192.168.8.225's password:
1_29_856078807.arc 100% 5356KB 5.2MB/s 00:01
1_30_856078807.arc 100% 12MB 11.7MB/s 00:00
[oracle@rac1 ~]$
4:在备库取消日志应用
SQL> alter database recover managed standby database cancel;
Database altered.
5:注册日志文件
SQL> alter database register logfile '/arch/sdyprod/1_29_856078807.arc';
……
Database altered.
SQL> alter database register logfile '/arch/sdyprod/2_16_856078807.arc';
Database altered.
6:开始日志应用
SQL> alter database recover managed standby database disconnect from session;
Database altered.
--本篇文章参考自:http://blog.itpub.net/14507784/viewspace-759605/
如果还是无法解决,可以参考文章:http://www.xifenfei.com/1176.html
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