OGG复制进程延迟不断增长怎么办

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-bash-3.2$ ogg

Oracle GoldenGate Command Interpreter for Oracle

Version 11.2.1.0.6 16211226 OGGCORE_11.2.1.0.6_PLATFORMS_130418.1829_FBO

Solaris, sparc, 64bit (optimized), Oracle 11g on Apr 22 2013 15:23:39

Copyright (C) 1995, 2013, Oracle and/or its affiliates. All rights reserved.

GGSCI (ODSDB) 1 info all

Program     Status      Group       Lag at Chkpt  Time Since Chkpt

MANAGER     RUNNING                                          

JAGENT      STOPPED                                          

REPLICAT    RUNNING     RP10        00:00:00      00:00:03    

REPLICAT    RUNNING     RP7         00:00:06      00:00:03    

REPLICAT    RUNNING     RPS1        42:41:14      00:00:01    

REPLICAT    RUNNING     RPS2        00:00:00      00:00:10    

REPLICAT    RUNNING     RPS2A       00:00:00      00:00:00    

REPLICAT    RUNNING     RPS2B       00:00:00      00:00:00    

REPLICAT    RUNNING     RPS3        00:00:00      00:00:02    

REPLICAT    RUNNING     RPS3A       00:00:00      00:00:03    

REPLICAT    RUNNING     RPS3B       00:00:00      00:00:02    

REPLICAT    RUNNING     RPS4        00:00:00      00:00:07    

REPLICAT    RUNNING     RPS4A       00:00:00      00:00:07    

REPLICAT    RUNNING     RPS4B       00:00:00      00:00:07    

REPLICAT    RUNNING     RPS4C       00:00:00      00:00:07    

REPLICAT    RUNNING     RPS4D       00:00:00      00:00:08    

REPLICAT    RUNNING     RPS4E       00:00:00      00:00:07    

REPLICAT    RUNNING     RPS4F       00:00:00      00:00:07    

REPLICAT    RUNNING     RPS4G       00:00:00      00:00:07    

REPLICAT    RUNNING     RPS4H       00:00:00      00:00:07    

REPLICAT    RUNNING     RPS4I       00:00:00      00:00:08    

REPLICAT    RUNNING     RPS4J       00:00:00      00:00:07    

跟他去了终端旁边,发现确实有个 rps1 进程延迟有点高。看着进程状态是 RUNNING,但是根据我维护六年 ogg 来看,有可能是假象,那么怎么判断呢?

1,查看 ggserr.log

2,查看 dirrpt 下面该进程的 dsc 文件

3,info 进程名多次,看看 RBA 是否有变化

经过以上几步 rps1 进程状态是正常的,延迟高问题出在哪里?view params rps1 看到该进程只有一张表。那我们看看这个进程到底卡在哪里了

SQL !ps -ef |grep rps1 |grep -v grep

  orao 12169 11012   0   Jun 07 ?         614:58 /odogg/baseogg/replicat PARAMFILE /odsogg/baseogg/dirprm/rps1.prm REPORTFILE /

SQL !ps -ef |grep 12169 |grep -v grep

  orao 12170 12169   1   Jun 07 ?        2315:30 oracleodb (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))

  orao 12169 11012   0   Jun 07 ?         614:58 /odogg/baseogg/replicat PARAMFILE /odsogg/baseogg/dirprm/rps1.prm REPORTFILE /

SQL select s.sid,s.SERIAL#,sql_id from v$process p,v$session s where p.addr=s.paddr and p.spid=12170;

       SID    SERIAL# SQL_ID

———- ———- ————-

      5146        113 5099dwmx3s4mf

SQL /

       SID    SERIAL# SQL_ID

———- ———- ————-

      5146        113 dzubcf8jm69yx

SQL /

       SID    SERIAL# SQL_ID

———- ———- ————-

      5146        113 dzubcf8jm69yx

SQL /

       SID    SERIAL# SQL_ID

———- ———- ————-

      5146        113 dzubcf8jm69yx

询问了一下维护过该系统的同事,说是不是统计信息太旧。顺着思路往下走走

SQL select OWNER,TABLE_NAME,LAST_ANALYZED from dba_tables where table_name= TF_F_USER_REVGRPTAG

OWNER             TABLE_NAME        LAST_ANALYZED

——————————————————————————-

TTT              TF_F_USER_REXXX    2017-06-26 00:20:56

SQL  select table_name,num_rows from dba_tables where owner= TTT and table_name= TF_F_USER_REXXX

TABLE_NAME              NUM_ROWS

—————————— ———-

TF_F_USER_REXXX          409269832

SQL select count(*) from TTT.TF_F_USER_REXXX;

  COUNT(*)

———-

 409955510

接下来我们看看该 sql 执行计划是不是走错了?

两条执行计划,很明显 137632316 运行了 5400 次但是执行时间却远远高于第二个执行计划。

用 sql profile 绑定一下执行计划

SQL @coe_xfr_sql_profile.sql

Parameter 1:

SQL_ID (required)

Enter value for 1: dzubcf8jm69yx

PLAN_HASH_VALUE AVG_ET_SECS

————— ———–

     2320424968        .004

      137632316      21.119

Parameter 2:

PLAN_HASH_VALUE (required)

Enter value for 2: 2320424968

Values passed to coe_xfr_sql_profile:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

SQL_ID         : dzubcf8jm69yx

PLAN_HASH_VALUE: 2320424968

查看是否绑定成功

SQL select name from dba_sql_profiles;

NAME

——————————

coe_dzubcf8jm69yx_2320424968

SYS_SQLPROF_015d075ccdd40000

coe_a5hgtqfq09tcu_229988255

在将内存中的该 sql 语句清除出去

SQL select address,hash_value,executions,parse_calls from v$sql where sql_TEXT like UPDATE TTT . TF_F_USER_RExxxx SET PARTITION_ID = :a27, USER_ID = :a28%

ADDRESS          HASH_VALUE EXECUTIONS PARSE_CALLS

—————- ———- ———- ———–

00000017673EA5E8 4198240878        100           0

00000017CF3E0000  897328139        673           0

00000017982D40D0 1588244011          8           0

000000049D04B1A8  590555101         10           0

00000017AA525230 4271852353          2           0

0000001777FC6A20 3666847391        735           0

00000017B9154A58 1180290247          1           0

7 rows selected.

SQL alter session set events 5614566 trace name context forever

Session altered.

SQL exec dbms_shared_pool.purge(00000017673EA5E8,4198240878 , C

PL/SQL procedure successfully completed.

SQL exec dbms_shared_pool.purge(00000017CF3E0000,897328139 , C

exec db

PL/SQL procedure successfully completed.

SQL ms_shared_pool.purge(00000017982D40D0,1588244011 , C

PL/SQL procedure successfully completed.

SQL exec dbms_shared_pool.purge(000000049D04B1A8,590555101 , C

PL/SQL procedure successfully completed.

SQL exec dbms_shared_pool.purge(00000017AA525230,4271852353 , C

PL/SQL procedure successfully completed.

SQL exec dbms_shared_pool.purge(0000001777FC6A20,3666847391 , C

PL/SQL procedure successfully completed.

SQL exec dbms_shared_pool.purge(00000017B9154A58,1180290247 , C

PL/SQL procedure successfully completed.

观察 ogg 复制进程延迟已经开始减小。该隐患顺利解决!

GGSCI (ODSDB) 8 info all

Program     Status      Group       Lag at Chkpt  Time Since Chkpt

MANAGER     RUNNING                                          

JAGENT      STOPPED                                          

REPLICAT    RUNNING     RP10        00:00:00      00:00:01    

REPLICAT    RUNNING     RP7         00:00:00      00:00:07    

REPLICAT    RUNNING     RPS1        31:10:29      00:00:50    

REPLICAT    RUNNING     RPS2        00:00:00      00:00:00    

REPLICAT    RUNNING     RPS2A       00:00:00      00:00:00    

REPLICAT    RUNNING     RPS2B       00:00:00      00:00:00    

REPLICAT    RUNNING     RPS3        00:00:00      00:00:01    

REPLICAT    RUNNING     RPS3A       00:00:00      00:00:02    

REPLICAT    RUNNING     RPS3B       00:00:00      00:00:01    

REPLICAT    RUNNING     RPS4        00:00:00      00:00:05    

REPLICAT    RUNNING     RPS4A       00:00:00      00:00:04    

REPLICAT    RUNNING     RPS4B       00:00:00      00:00:04    

REPLICAT    RUNNING     RPS4C       00:00:00      00:00:04    

REPLICAT    RUNNING     RPS4D       00:00:00      00:00:04    

REPLICAT    RUNNING     RPS4E       00:00:00      00:00:04    

REPLICAT    RUNNING     RPS4F       00:00:00      00:00:04    

REPLICAT    RUNNING     RPS4G       00:00:00      00:00:05    

REPLICAT    RUNNING     RPS4H       00:00:00      00:00:04    

REPLICAT    RUNNING     RPS4I       00:00:00      00:00:04    

REPLICAT    RUNNING     RPS4J       00:00:00      00:00:04  

以上是“OGG 复制进程延迟不断增长怎么办”这篇文章的所有内容,感谢各位的阅读!相信大家都有了一定的了解,希望分享的内容对大家有所帮助,如果还想学习更多知识,欢迎关注丸趣 TV 行业资讯频道!

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