OGG部署时,抽取进程(Extract)注册到数据库时遇到下面错误:
REGISTER EXTRACT ***** DATABASE
ERROR OGG-08221 Cannot register or unregister EXTRACT because of the following SQL error: OCI Error ORA (status = 1-ORA-00001: unique constraint (SYSTEM.LOGMNR_SESSION_UK1) violated
关于这个错误,Oracle官方文档Unable To Register OGG Extract (Doc ID 2861271.1)[1]有相关的介绍和分析,如下所示:
SYMPTOMS
Unable to register OGG extract
GGSCI 5> register extract database container ()
ERROR OGG-08221 Cannot register or unregister EXTRACT because of the following SQL error: OCI Error ORA (status = 1-ORA-00001: unique constraint (SYSTEM.LOGMNR_SESSION_UK1) violated
ORA-06512: at "SYS.DBMS_CAPTURE_ADM_INTERNAL", line 617
ORA-06512: at "SYS.DBMS_CAPTURE_ADM_INTERNAL", line 249
ORA-06512: at "SYS.DBMS_CAPTURE_ADM_INTERNAL", line 589
ORA-06512: at "SYS.DBMS_CAPTURE_ADM_IVK", line 177
ORA-06512: at "SYS.DBMS_CAPTURE_ADM", line 179
CAUSE
possible clean up required on queue or CAPTURE, APPLY process related to
clean up required for the session created for in logminer tables
SOLUTION
sqlplus c##ggs_owner/
delete from system.logmnr_spill$ where session# = 10;
delete from system.logmnr_age_spill$ where session# = 10;
delete from system.logmnr_log$ where session# = 10;
delete from system.logmnr_restart_ckpt$ where session# = 10;
delete from system.logmnr_restart_ckpt_txinfo$ where session# = 10;
delete from system.logmnr_filter$ where session# = 10;
delete from system.logmnr_parameter$ where session# = 10;
delete from system.logmnr_global$ where session# = 10;
delete from system.logmnr_session$ where session# = 10;
commit;
Then register again
官方文档解释,抽取进程REGISTER到数据库出现失败的可能原因有下面两个:
- 1:可能是因为进程相关的CAPTURE、APPLY的队列没有清理干净
- 2:需要清理干净进程创建的与logmnr相关的会话。
千万不要直接拷贝官方文档的SQL语句,你首先需要通过下面SQL找出logmnr相关的会话ID信息
SET LINESIZE 720;
COL SESSION_NAME FOR A16
COL GLOBAL_DB_NAME FOR A12
SELECT SESSION#,CLIENT#,SESSION_NAME,DB_ID,GLOBAL_DB_NAME FROM SYSTEM.LOGMNR_SESSION$;
然后用具体的会话ID替换上面的会话10后,执行SQL语句,然后就可以重新注册抽取进程了。
sqlplus c##ggs_owner/ --用实际的ogg用户替换当前用
delete from system.logmnr_spill$ where session# = xxx;
delete from system.logmnr_age_spill$ where session# = xxx;
delete from system.logmnr_log$ where session# = xxx;
delete from system.logmnr_restart_ckpt$ where session# = xxx;
delete from system.logmnr_restart_ckpt_txinfo$ where session# = xxx;
delete from system.logmnr_filter$ where session# = xxx;
delete from system.logmnr_parameter$ where session# = xxx;
delete from system.logmnr_global$ where session# = xxx;
delete from system.logmnr_session$ where session# = xxx;
commit;
参考资料
[1]
1: https://support.oracle.com/epmos/faces/DocumentDisplay?_afrLoop=390982163154682&id=2861271.1&_afrWindowMode=0&_adf.ctrl-state=dq53pb6ig_80
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