1，dataguard搭建好后，归档日志传输不过去
去查看master库上面的日志
tail –f /data/oracle/diag/rdbms/test_m1/powerdes/trace/alert_powerdes.log，显示信息如下：
Sun May 08 00:34:17 2016
Error 1034 received logging on to the standby
PING[ARC2]: Heartbeat failed to connect to standby ‘test_m2‘. Error is1034.
2，tnsping earch_m2是通的
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[[email protected]_test_dbm1_3_111 admin]$ tnsping test_m3 TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 08-MAY-2016 09:13:42 Copyright (c) 1997, 2013, Oracle. All rights reserved. Used parameter files: Used TNSNAMES adapter to resolve the alias Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.3.112)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = test_m2))) OK (0 msec) [[email protected]_test_dbm1_3_111 admin]$ |
3，去standby备库上，Check检查下service_name，看到service_names确实是test_m2
看起来service_name也没用错，如下所示：
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[[email protected]_test_dbm1_3_112 admin]$ rlwrap sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Sun May 8 09:15:27 2016 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> show parameter name; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ cell_offloadgroup_name string db_file_name_convert string /oracle/app/oracle/oradata/pow erdes, /oracle/app/oracle/orad ata/powerdes db_name string powerdes db_unique_name string test_m2 global_names boolean FALSE instance_name string powerdes lock_name_space string log_file_name_convert string /data/oracle/oradata/powerdes, /data/oracle/oradata/pwerdes NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ processor_group_name string service_names string test_m2 SQL> |
文章来源blog地址：http://blog.csdn.net/mchdba/article/details/51344246，谢绝转载
4，在master库、standby库，通过sqlplus登录报错
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# 主库登录sqlplus报错 [[email protected]_test_dbm1_3_111 admin]$ sqlplus sys/[email protected]_m2 as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Sun May 8 09:19:48 2016 Copyright (c) 1982, 2013, Oracle. All rights reserved. ERROR: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor Enter user-name: # 备库sqlplus登录报错 [[email protected]_test_dbm1_3_112 admin]$ sqlplus sys/[email protected]_m2 as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Sun May 8 09:18:39 2016 Copyright (c) 1982, 2013, Oracle. All rights reserved. ERROR: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor Enter user-name: |
都报错：ORA-12514:TNS:listener does not currently know of service requested in connect descriptor，这个问题一般就涉及到的是tnsnames.ora里面的service_name没有写对了。
5，替换service_name，问题解决
回忆这个备库的搭建过程，我刚建库dbca的时候，设置的service_name是powerdes，我在配置dataguard的时候，修改了参数文件initpowerdes.ora，有在里面新设置*.db_unique_name=test_m2，再次create spfile frompfile;然后以新的参数文件启动数据库后，看到service_names变成了test_m2了，而我就在tnsnames.ora里面设置了新的service_names名字test_m2，这个新的test_m2没有生效结果报错ORA-12514了。
因此，我要将没有生效的test_m2换成原来的powerdes，需要换的地方有2个，一个是listener.ora，一个是tnsnames.ora，主库master库和备库standby库都要修改如下所示：
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#主库master库修改1个文件tnsnames.ora # tnsnames.ora文件 [[email protected]_test_dbm1_3_111 admin]$ vim tnsnames.ora test_m2 = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.3.112)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = powerdes) ) )
#备库standby库需要修改2个文件listener.ora、tnsnames.ora # listener.ora文件 [[email protected]_test_dbm1_3_112 admin]$ vim listener.ora SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (SID_NAME = PLSExtProc) (ORACLE_HOME = /oracle/app/oracle/product/11.2.0/dbhome_1) (PROGRAM = extproc) ) (SID_DESC = (SID_NAME = powerdes) (ORACLE_HOME = /oracle/app/oracle/product/11.2.0/dbhome_1) ) ) ADR_BASE_LISTENER = /oracle/app/oracle # tnsnames.ora文件 [[email protected]_test_dbm1_3_112 admin]$ vim tnsnames.ora test_m2 = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.3.112)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = powerdes) ) ) |
修改完配置后，然后重启lsnrctl监听服务，再在备库使用sqlplus登录test_m2，登录成功：
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[[email protected]_test_dbm1_3_112 admin]$ sqlplus sys/[email protected]_m2 as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Sun May 8 09:34:51 2016 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> |
再去看主库master库的后台alert日志，就会发现已经有开始传输归档日志的记录了：
……
******************************************************************
LGWR: Setting ‘active‘ archival fordestination LOG_ARCHIVE_DEST_2
******************************************************************
LGWR: Standby redo logfile selected toarchive thread 1 sequence 26
LGWR: Standby redo logfile selected forthread 1 sequence 26 for destination LOG_ARCHIVE_DEST_2
Thread 1 advanced to log sequence 26 (LGWRswitch)
Current log# 2 seq# 26 mem# 0:/oracle/app/oracle/oradata/powerdes/redo02.log
Sun May 08 01:12:22 2016
Archived Log entry 22 added for thread 1sequence 25 ID 0xcf7feffa dest 1:
ARC0: Standby redo logfile selected forthread 1 sequence 25 for destination LOG_ARCHIVE_DEST_2
Destination LOG_ARCHIVE_DEST_2 isSYNCHRONIZED
……
PS：这里问题比较奇怪，我上次这里service_name需要修改成新的参数文件里面的test_m2才能归档日志传输到备库standby上面，但是这次确需要保持原来的service_name。看来这里面还有别的奥妙所在。需要去探索清楚了。