switchover physical DB怎样互换primary DB

switchover physical DB怎样互换primary DB，相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。

PS：这一些实验是建立在我之前博客实验的基础上的

为什么要先alter 先切主库  再切备库，

因为如果先切备库的话，那么主库的一些日志可能备库收不到，导致不一致的情况发生

先切主库------>standby DB 切换之后主库是断开close的，重新open后查看其状态

20:53:33 SYS @ slow >select name,database_role,protection_mode,switchover_status from v$database;

NAME      DATABASE_ROLE    PROTECTION_MODE    SWITCHOVER_STATUS

--------- ---------------- -------------------- --------------------

SLOW     PRIMARY       MAXIMUM AVAILABILITY TO STANDBY

1 row selected.

Elapsed: 00:00:00.00

20:55:15 SYS @ slow >edit

Wrote file afiedt.buf

  1* select username,sid,serial# from v$session where username is not null

20:55:24 SYS @ slow >r

  1* select username,sid,serial# from v$session where username is not null

USERNAME                  SID    SERIAL#

------------------------------ ---------- ----------

SYS                    1       5

1 row selected.

Elapsed: 00:00:00.01

20:55:25 SYS @ slow >r

1* select username,sid,serial# from v$session where username is not null

USERNAME                  SID    SERIAL#

------------------------------ ---------- ----------

SYS                    1       5

SCOTT                       41      47

2 rows selected.

Elapsed: 00:00:00.00

20:56:25 SYS @ slow >alter database commit to switchover to standby;

Database altered.

Elapsed: 00:00:01.89

20:57:05 SYS @ slow >select name,database_role,protection_mode,switchover_status from v$database;

select name,database_role,protection_mode,switchover_status from v$database

*

ERROR at line 1:

ORA-01034: ORACLE not available

Process ID: 5713

Session ID: 1 Serial number: 5

Elapsed: 00:00:00.00

20:58:08 SYS @ slow >select status from v$instance;

select status from v$instance

*

ERROR at line 1:

ORA-01034: ORACLE not available

Process ID: 5713

Session ID: 1 Serial number: 5

Elapsed: 00:00:00.00

20:58:46 SYS @ slow >startup

ORACLE instance started.

Total System Global Area  521936896 bytes

Fixed Size            2254824 bytes

Variable Size          377489432 bytes

Database Buffers      138412032 bytes

Redo Buffers            3780608 bytes

Database mounted.

Database opened.

21:07:19 SYS @ slow >select name,open_mode,database_role,protection_mode,switchover_status from v$database;

NAME      OPEN_MODE           DATABASE_ROLE    PROTECTION_MODE      SWITCHOVER_STATUS

--------- -------------------- ---------------- -------------------- --------------------

SLOW      READ ONLY           PHYSICAL STANDBY MAXIMUM AVAILABILITY TO PRIMARY

1 row selected.

Elapsed: 00:00:00.01

21:07:55 SYS @ slow >recover managed standby database disconnect;

Media recovery complete.

21:08:35 SYS @ slow >select name,open_mode,database_role,protection_mode,switchover_status from v$database;

NAME      OPEN_MODE           DATABASE_ROLE    PROTECTION_MODE      SWITCHOVER_STATUS

--------- -------------------- ---------------- -------------------- --------------------

SLOW      READ ONLY WITH APPLY PHYSICAL STANDBY MAXIMUM AVAILABILITY TO PRIMARY

1 row selected.

Elapsed: 00:00:00.00

21:09:02 SYS @ slow >

再切换备库----->primary DB  备库mount状态下操作  成功！！！

20:52:21 SYS @ gotime >select name,database_role,protection_mode,switchover_status from v$database;

NAME      DATABASE_ROLE    PROTECTION_MODE    SWITCHOVER_STATUS

--------- ---------------- -------------------- --------------------

SLOW      PHYSICAL STANDBY MAXIMUM AVAILABILITY NOT ALLOWED

1 row selected.

Elapsed: 00:00:00.01

20:53:12 SYS @ gotime >r

1* select name,database_role,protection_mode,switchover_status from v$database

NAME      DATABASE_ROLE    PROTECTION_MODE    SWITCHOVER_STATUS

--------- ---------------- -------------------- --------------------

SLOW      PHYSICAL STANDBY MAXIMUM AVAILABILITY NOT ALLOWED

1 row selected.

Elapsed: 00:00:00.00

20:59:16 SYS @ gotime >select username,sid from v$session where username is not null;

USERNAME                  SID

------------------------------ ----------

SYS                       24

1 row selected.

Elapsed: 00:00:00.01

21:02:26 SYS @ gotime >alter database commit to switchover to primary with session shutdown;

alter database commit to switchover to primary with session shutdown

*

ERROR at line 1:

ORA-16139: media recovery required

Elapsed: 00:00:00.01

21:03:18 SYS @ gotime >recover managed standby database disconnect;

Media recovery complete.

21:03:51 SYS @ gotime >alter database commit to switchover to primary with session shutdown;

Database altered.

Elapsed: 00:00:02.04

21:05:00 SYS @ gotime >select name,database_role,protection_mode,switchover_status from v$database;

NAME      DATABASE_ROLE    PROTECTION_MODE    SWITCHOVER_STATUS

--------- ---------------- -------------------- --------------------

SLOW     PRIMARY       MAXIMUM AVAILABILITY NOT ALLOWED

1 row selected.

Elapsed: 00:00:00.01

21:05:12 SYS @ gotime >alter database open;

Database altered.

Elapsed: 00:00:00.58

21:05:45 SYS @ gotime >select name,database_role,protection_mode,switchover_status from v$database;

NAME      DATABASE_ROLE    PROTECTION_MODE    SWITCHOVER_STATUS

--------- ---------------- -------------------- --------------------

SLOW     PRIMARY       MAXIMUM AVAILABILITY FAILED DESTINATION

1 row selected.

Elapsed: 00:00:00.01

21:06:13 SYS @ gotime >

--------------------------------------但是，switchover_status是failed destination 状态------------------------------------------

switchover之后的备库slow，重新启动listener

[oracle@slow ~]$ lsnrctl stop

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 13-JAN-2018 21:31:12

Copyright (c) 1991, 2013, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=slow)(PORT=1521)))

TNS-12541: TNS:no listener

 TNS-12560: TNS:protocol adapter error

  TNS-00511: No listener

Linux Error: 111: Connection refused

[oracle@slow ~]$ lsnrctl start

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 13-JAN-2018 21:31:20

Copyright (c) 1991, 2013, Oracle. All rights reserved.

Starting /u01/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.4.0 - Production

System parameter file is /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

Log messages written to /u01/app/oracle/diag/tnslsnr/slow/listener/alert/log.xml

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=slow)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=slow)(PORT=1521)))

STATUS of the LISTENER

------------------------

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 11.2.0.4.0 - Production

Start Date 13-JAN-2018 21:31:20

Uptime                    0 days 0 hr. 0 min. 0 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

Listener Log File /u01/app/oracle/diag/tnslsnr/slow/listener/alert/log.xml

Listening Endpoints Summary...

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=slow)(PORT=1521)))

The listener supports no services

The command completed successfully

[oracle@slow ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 13-JAN-2018 21:31:23

Copyright (c) 1991, 2013, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=slow)(PORT=1521)))

STATUS of the LISTENER

------------------------

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 11.2.0.4.0 - Production

Start Date 13-JAN-2018 21:31:20

Uptime                    0 days 0 hr. 0 min. 2 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

Listener Log File /u01/app/oracle/diag/tnslsnr/slow/listener/alert/log.xml

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=slow)(PORT=1521)))

The listener supports no services

The command completed successfully

关闭slow备库，再打开mount状态

21:28:36 SYS @ slow >shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

21:28:53 SYS @ slow >startup mount;

ORACLE instance started.

Total System Global Area  521936896 bytes

Fixed Size            2254824 bytes

Variable Size          377489432 bytes

Database Buffers      138412032 bytes

Redo Buffers            3780608 bytes

Database mounted.

21:29:08 SYS @ slow >

等slow备库重新启动之后，状态为ready了

[oracle@slow ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 13-JAN-2018 21:32:05

Copyright (c) 1991, 2013, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=slow)(PORT=1521)))

STATUS of the LISTENER

------------------------

Alias LISTENER

Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production

Start Date 13-JAN-2018 21:31:20

Uptime 0 days 0 hr. 0 min. 44 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora

Listener Log File /u01/app/oracle/diag/tnslsnr/slow/listener/alert/log.xml

Listening Endpoints Summary...

(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=slow)(PORT=1521)))

Services Summary...

Service "slow" has 1 instance(s).

Instance "slow", status READY, has 1 handler(s) for this service...

The command completed successfully

[oracle@slow ~]$

现在的主库gotime这边重启listener

[grid@sink ~]$ lsnrctl stop

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 13-JAN-2018 21:31:41

Copyright (c) 1991, 2013, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=sink)(PORT=1521)))

The command completed successfully

[grid@sink ~]$ lsnrctl start

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 13-JAN-2018 21:31:46

Copyright (c) 1991, 2013, Oracle. All rights reserved.

Starting /u01/11.2.0/grid/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.4.0 - Production

System parameter file is /u01/11.2.0/grid/network/admin/listener.ora

Log messages written to /u01/app/grid/diag/tnslsnr/sink/listener/alert/log.xml

Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=sink)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=sink)(PORT=1521)))

STATUS of the LISTENER

------------------------

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 11.2.0.4.0 - Production

Start Date 13-JAN-2018 21:31:46

Uptime                    0 days 0 hr. 0 min. 0 sec

Trace Level off

Security ON: Local OS Authentication

SNMP OFF

Listener Parameter File /u01/11.2.0/grid/network/admin/listener.ora

Listener Log File /u01/app/grid/diag/tnslsnr/sink/listener/alert/log.xml

Listening Endpoints Summary...

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=sink)(PORT=1521)))

Services Summary...

Service "gotime" has 1 instance(s).

Instance "gotime", status UNKNOWN, has 1 handler(s) for this service...

The command completed successfully

[grid@sink ~]$

gotime主库重新启动，到open

21:32:12 SYS @ gotime >startup force;

ORACLE instance started.

Total System Global Area  521936896 bytes

Fixed Size            2254824 bytes

Variable Size          377489432 bytes

Database Buffers      138412032 bytes

Redo Buffers            3780608 bytes

Database mounted.

Database opened.

21:32:35 SYS @ gotime >

switchover之后的备库slow，查询其状态，not allowed，正常了！！

21:29:08 SYS @ slow >recover managed standby database disconnect;

Media recovery complete.

21:29:32 SYS @ slow >select name,open_mode,database_role,protection_mode,switchover_status from v$database;

NAME      OPEN_MODE           DATABASE_ROLE    PROTECTION_MODE      SWITCHOVER_STATUS

--------- -------------------- ---------------- -------------------- --------------------

SLOW      MOUNTED           PHYSICAL STANDBY MAXIMUM AVAILABILITY NOT ALLOWED

1 row selected.

Elapsed: 00:00:00.01

21:33:16 SYS @ slow >

在查询状态，为to standby了，正常了！！

21:32:35 SYS @ gotime >select name,open_mode,database_role,protection_mode,switchover_status from v$database

21:32:45   2 ;

NAME      OPEN_MODE           DATABASE_ROLE    PROTECTION_MODE      SWITCHOVER_STATUS

--------- -------------------- ---------------- -------------------- --------------------

SLOW      READ WRITE     PRIMARY        MAXIMUM AVAILABILITY TO STANDBY

1 row selected.

Elapsed: 00:00:00.02

21:32:47 SYS @ gotime >

看完上述内容，你们掌握switchover physical DB怎样互换primary DB的方法了吗？如果还想学到更多技能或想了解更多相关内容，欢迎关注行业资讯频道，感谢各位的阅读！