goldengate dml同步进程目标表加字段处理测试

--实验：对于仅有dml同步的goldengate进程，如果源端进行ddl加字段操作，如何处理对应的进程

--源端orcl

--首先检查进程状态，running状态：

[[email protected] ogg]$ ./ggsci

GGSCI (localhost.localdomain) 1> info all

Program     Status      Group       Lag at Chkpt  Time Since Chkpt

MANAGER     RUNNING                                           

EXTRACT     RUNNING     DPUMP1      00:00:00      00:00:08    

EXTRACT     RUNNING     EXT1        00:00:00      00:00:06    

--停止抽取进程及传输进程：

GGSCI (localhost.localdomain) 2> stop *

Sending STOP request to EXTRACT DPUMP1 ...

Request processed.

Sending STOP request to EXTRACT EXT1 ...

Request processed.

GGSCI (localhost.localdomain) 3> info all

Program     Status      Group       Lag at Chkpt  Time Since Chkpt

MANAGER     RUNNING                                           

EXTRACT     STOPPED     DPUMP1      00:00:00      00:00:11    

EXTRACT     STOPPED     EXT1        00:00:00      00:00:09  

--目标端orcltest

--确认复制进程状态为running，并停掉进程：

GGSCI (localhost.localdomain) 8> info all

Program     Status      Group       Lag at Chkpt  Time Since Chkpt

MANAGER     RUNNING                                           

REPLICAT    RUNNING     REP1        00:00:00      00:00:06    

GGSCI (localhost.localdomain) 9> stop *

Sending STOP request to REPLICAT REP1 ...

Request processed.

--源端orcl

--对同步的表添加一个字段

[[email protected] ogg]$ sqlplus / as sysdba

SQL> alter table ggs.test add new_col varchar2(10);

Table altered.

SQL> exit

--目标端orcltest

--同样添加字段：

[[email protected] ogg]$ sqlplus / as sysdba

SQL> alter table ggs.test add new_col varchar2(10);

Table altered.

SQL> exit

--源端orcl

--启动抽取，传输进程

[[email protected] ogg]$ ./ggsci

GGSCI (localhost.localdomain) 2> start *

Sending START request to MANAGER ...

EXTRACT DPUMP1 starting

Sending START request to MANAGER ...

EXTRACT EXT1 starting

GGSCI (localhost.localdomain) 4> info all

Program     Status      Group       Lag at Chkpt  Time Since Chkpt

MANAGER     RUNNING                                           

EXTRACT     RUNNING     DPUMP1      00:40:12      00:00:04    

EXTRACT     RUNNING     EXT1        00:02:55      00:00:08  

--目标端orcltest

--启动复制进程  

[[email protected] ogg]$ ./ggsci

GGSCI (localhost.localdomain) 2> start *

Sending START request to MANAGER ...

REPLICAT REP1 starting

GGSCI (localhost.localdomain) 5> info all

Program     Status      Group       Lag at Chkpt  Time Since Chkpt

MANAGER     RUNNING                                           

REPLICAT    RUNNING     REP1        00:00:00      00:00:01    

--源端orcl

--进行数据修改测试

[[email protected] ~]$ sqlplus / as sysdba

SQL> select count(*) from ggs.test;

  COUNT(*)

----------

        33

SQL> delete from ggs.test where rownum<5;

4 rows deleted.

SQL> commit;

Commit complete.

SQL> insert into ggs.test (username,user_id,account_status,default_tablespace,temporary_tablespace,created,profile,new_col)

values ('a','7','open','one','temp',sysdate,'default','test');  2  

1 row created.

SQL> commit;

Commit complete.

SQL> 

--目标端orcltest

--对应的测试结果：结果正确，说明同步进程是正常的

SQL> select count(1) from ggs.test;

  COUNT(1)

----------

        29

SQL> select count(*) from ggs.test;

  COUNT(*)

----------

        30

SQL> exit

实验结论：对于正常进行的dml复制进程，如果目标表需要加字段，通过停止进程，源端目标端同时进行ddl操作，

然后重新启动进程就可以了，复制进程会正常进行。