goldengate故障的处理方法

这期内容当中小编将会给大家带来有关goldengate故障的处理方法，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。

问题描述：

我们线上的gg上线时间是上周三晚上，也就是4月19号晚上，当时上线的时候是配置在rac的节点3上的，在重启节点3的时候由于疏忽，原本32G的内存，起来之后只识别了24G，当时没有发现，运行几天后，突然发现，每天都有那么一、二次，节点3并发非常高，操作系统层面平均负载从几一下飙升到五六十，造成数据库短暂性假死现象，恰恰在这个时间点上，gg的抽取进程在top1，再看操作系统的内存使用情况，只剩下几十k了，一开始怀疑是nfs挂载的问题，最后测试下来，也没什么问题，最后决定紧急处理节点3的内存问题，具体处理细节如下：

晚6点下班后，由于6点到9点这个时间段，相对来说网站和boss都还比较繁忙，这段时间就没做任何操作，到了9点钟，通知运维相关人员，把节点3的tomcat全部停止，然后我这里停gg，卸载nfs，关闭节点3的所有数据库进程，最后关机，操作见下：

GGSCI (rac3) 21> stop mgr

GGSCI (rac3) 21> stop extract xxxx

GGSCI (rac3) 21> stop dpump xxxx

停的过程中，errlog中的信息如下：

2012-04-26 20:57:39  INFO    OGG-00497  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Writing DDL operation to extract trail file.

2012-04-26 21:01:36  INFO    OGG-00987  Oracle GoldenGate Command Interpreter for Oracle:  GGSCI command (oracle): stop extksr1.

2012-04-26 21:01:38  INFO    OGG-01021  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Command received from GGSCI: STOP.

2012-04-26 21:01:39  INFO    OGG-00991  Oracle GoldenGate Capture for Oracle, extksr1.prm:  EXTRACT EXTKSR1 stopped normally.

2012-04-26 21:01:41  INFO    OGG-00987  Oracle GoldenGate Command Interpreter for Oracle:  GGSCI command (oracle): stop dpksr1.

2012-04-26 21:01:43  INFO    OGG-01021  Oracle GoldenGate Capture for Oracle, dpksr1.prm:  Command received from GGSCI: STOP.

2012-04-26 21:01:43  INFO    OGG-00991  Oracle GoldenGate Capture for Oracle, dpksr1.prm:  EXTRACT DPKSR1 stopped normally.

2012-04-26 21:01:47  INFO    OGG-00987  Oracle GoldenGate Command Interpreter for Oracle:  GGSCI command (oracle): stop mgr.

2012-04-26 21:01:49  INFO    OGG-00963  Oracle GoldenGate Manager for Oracle, mgr.prm:  Command received from GGSCI on host 10.1.8.49 (STOP).

2012-04-26 21:01:49  WARNING OGG-00938  Oracle GoldenGate Manager for Oracle, mgr.prm:  Manager is stopping at user request.

相关进程都停止之后，卸载nfs，umount了节点1，2以及共享存储，具体命令略过，很简单，值得一提的是，在卸载共享存储的时候，会出现资源忙的情况，只要加个-l参数就可以了，同时主站gg进程都停止之后，会发现gg的目标端进程虽然是running状态，但是errlog里会提示抽取进程已停止的相关信息：

2012-04-26 20:54:38  INFO    OGG-00484  Oracle GoldenGate Delivery for Oracle, repksr1.prm:  Executing DDL operation.

2012-04-26 20:54:38  INFO    OGG-00483  Oracle GoldenGate Delivery for Oracle, repksr1.prm:  DDL operation successful.

2012-04-26 20:54:38  INFO    OGG-01408  Oracle GoldenGate Delivery for Oracle, repksr1.prm:  Restoring current schema for DDL operation to [OGG].

2012-04-26 20:58:41  INFO    OGG-01735  Oracle GoldenGate Collector:  Synchronizing /home/oracle/ggs/trails/t1000239 to disk.

2012-04-26 20:58:41  INFO    OGG-01670  Oracle GoldenGate Collector:  Closing /home/oracle/ggs/trails/t1000239.

2012-04-26 20:58:41  INFO    OGG-01675  Oracle GoldenGate Collector:  Terminating because extract is stopped.

以上步骤执行完了之后，停掉节点3上的数据库相关进程和服务，略过，然后就是关机，通知在机房候命的同事，然后那边开始处理内存问题.........大约30分钟后，内存问题解决，服务器启动起来后，我这里开始处理后续事宜：

首先就是在节点3上启动portmap和nfs服务，略过................

之后挂载节点1，2以及共享存储，之后在启动mgr进程的时候会报错，如下：

2012-04-26 21:50:18  ERROR   OGG-01117  Oracle GoldenGate Command Interpreter for Oracle:  Received signal: Program interrupt (2).

2012-04-26 21:50:18  ERROR   OGG-01668  Oracle GoldenGate Command Interpreter for Oracle:  PROCESS ABENDING.

2012-04-26 21:51:43  INFO    OGG-00987  Oracle GoldenGate Command Interpreter for Oracle:  GGSCI command (oracle): start mgr.

2012-04-26 21:52:13  ERROR   OGG-01454  Oracle GoldenGate Manager for Oracle, mgr.prm:  Unable to lock file "/share_disk/ggs/dirpcs/MGR.pcm" (error 37, No locks available).

2012-04-26 21:52:13  ERROR   OGG-01668  Oracle GoldenGate Manager for Oracle, mgr.prm:  PROCESS ABENDING.

以上红色部分大概意思就是mgr进程无法获得共享存储上的相关锁，直接会导致后续操作都无法进行，方法很简单，就是在节点3上启动nfslock服务，然后再启动mgr进程就好了，待mgr启动起来之后，发现抽取进程abend掉了，errlog里抛出相关extract的错误信息，如下：

2012-04-26 21:54:34  INFO    OGG-01026  Oracle GoldenGate Capture for Oracle, dpksr1.prm:  Rolling over remote file /home/oracle/ggs/trails/t1000240.

2012-04-26 21:54:34  INFO    OGG-01053  Oracle GoldenGate Capture for Oracle, dpksr1.prm:  Recovery completed for target file /home/oracle/ggs/trails/t1000240, at RBA 1022.

2012-04-26 21:54:34  INFO    OGG-01057  Oracle GoldenGate Capture for Oracle, dpksr1.prm:  Recovery completed for all targets.

2012-04-26 21:54:35  ERROR   OGG-00446  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Could not find archived log for sequence 16857 thread 3 under alternative destinations. SQL <SELECT MAX(sequence#)  FROM v$log WHERE thread# = :ora_thread>. Last alternative log tried /arch/rac3/3_16857_744833311.dbf, error retrieving redo file name for sequence 16857, archived = 1, use_alternate = 0Not able to establish initial position for sequence 16857, rba 1529360.

2012-04-26 21:54:35  ERROR   OGG-01668  Oracle GoldenGate Capture for Oracle, extksr1.prm:  PROCESS ABENDING.

造成这种情况的原因很简单，就是节点3在关闭的时候，出现vip漂移至其他节点了，导致原本节点3上的归档归到了其他的节点上，在gg抽取节点3的归档的时候，在相关目录下找不到必须的归档日志，所以就abend掉了，原因清楚之后，解决就简单了，直接到其他节点上把节点3的归档日志拷贝过来，然后再启动抽取进程就ok了：

2012-04-26 21:57:22  INFO    OGG-00993  Oracle GoldenGate Capture for Oracle, extksr1.prm:  EXTRACT EXTKSR1 started.

2012-04-26 21:57:22  INFO    OGG-01055  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Recovery initialization completed for target file /share_disk/ggs/trails/s1000239, at RBA 24518902.

2012-04-26 21:57:22  INFO    OGG-01478  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Output file /share_disk/ggs/trails/s1 is using format RELEASE 10.4/11.1.

2012-04-26 21:57:23  INFO    OGG-01517  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Position of first record processed for Thread 1, Sequence 29645, RBA 18568720, SCN 18.122009990, Apr 26, 2012 9:01:24 PM.

2012-04-26 21:57:23  INFO    OGG-01517  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Position of first record processed for Thread 2, Sequence 28161, RBA 12794496, SCN 18.122010368, Apr 26, 2012 9:01:32 PM.

2012-04-26 21:57:24  INFO    OGG-01026  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Rolling over remote file /share_disk/ggs/trails/s1000239.

2012-04-26 21:57:24  INFO    OGG-01053  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Recovery completed for target file /share_disk/ggs/trails/s1000240, at RBA 1019.

2012-04-26 21:57:24  INFO    OGG-01057  Oracle GoldenGate Capture for Oracle, extksr1.prm:  Recovery completed for all targets.

gg主库：

GGSCI (rac3) 20> info all

Program     Status      Group       Lag           Time Since Chkpt

MANAGER     RUNNING                                           

EXTRACT     RUNNING     DPKSR1      00:00:00      00:00:00    

EXTRACT     RUNNING     EXTKSR1     00:00:00      00:00:04   

gg备库：

GGSCI (rptdb) 7> info all

Program     Status      Group       Lag           Time Since Chkpt

MANAGER     RUNNING                                           

REPLICAT    RUNNING     REPKSR1     00:00:00      00:00:00

最后观察了一段时间，发现主站和gg都没什么问题了，整过程持续了大概一个小时，接下来一周时间继续观察监控。

记录一下~~

上述就是小编为大家分享的goldengate故障的处理方法了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注亿速云行业资讯频道。