DataGuard之switchover_status状态not allowed解决过程
本在VB中搭建了一套dataguard,前两天PC机自动重启,当时恰在试验主备库间的switchover和failover，于是重新启动报错：主库switchover_status状态一直是: not allowed状态.
---->>查询官方说明得知:
NOT ALLOWED - Either this is a standby database and the primary database has not been switched first, or this is a primary database and there are no standby databases.
SESSIONS ACTIVE - Indicates that there are active SQL sessions attached to the primary or standby database that need to be disconnected before the switchover operation is permitted.
------->>DG配置如下:
|
|
主机1 |
主机2 |
| 操作系统 |
Redhat5 64位 |
Redhat5 64位 |
| 主机名 |
dawn.com |
dg.com |
| IP |
192.168.11.110 |
192.168.11.112 |
| 数据库软件版本 |
oracle 11.2.0.1.0 |
oracle 11.2.0.1.0 |
| ORACLE_BASE |
/oracle/app/oracle/ |
/oracle/app/oracle/ |
| ORACLE_HOME |
$ORACLE_BASE/product/11.2.0/db_1 |
$ORACLE_BASE/product/11.2.0/db_1 |
| ORACLE_SID |
primary |
standby |
| 闪回区 |
2G |
2G |
| 归档 |
开启 |
开启 |
----------------------------->>下面摘录出解决过程:
主库:
[oracle@dawn dbs]$ tnsping standby
TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 25-SEP-2014 15:07:21
Copyright (c) 1997, 2009, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.11.112)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = standby)))
OK (30 msec)
[oracle@dawn dbs]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Thu Sep 25 15:07:41 2014
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select open_mode from database;
select open_mode from database
*
ERROR at line 1:
ORA-00942: table or view does not exist
SQL> select open_mode from v$database;
OPEN_MODE
--------------------
READ WRITE
SQL> show parameter log_archive_config
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_config string dg_config=(primary,standby)
SQL> show parameter log_archive_dest
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest string
log_archive_dest_1 string location=/u01/app/oracle/orada
ta/arch
log_archive_dest_10 string
log_archive_dest_11 string
log_archive_dest_12 string
log_archive_dest_13 string
log_archive_dest_14 string
log_archive_dest_15 string
log_archive_dest_16 string
log_archive_dest_17 string
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_18 string
log_archive_dest_19 string
log_archive_dest_2 string service=standby LGWR SYNC AFFI
RM valid_for=(online_logfiles,
primary_role)
log_archive_dest_20 string
log_archive_dest_21 string
log_archive_dest_22 string
log_archive_dest_23 string
log_archive_dest_24 string
log_archive_dest_25 string
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_26 string
log_archive_dest_27 string
log_archive_dest_28 string
log_archive_dest_29 string
log_archive_dest_3 string
log_archive_dest_30 string
log_archive_dest_31 string
log_archive_dest_4 string
log_archive_dest_5 string
log_archive_dest_6 string
log_archive_dest_7 string
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_8 string
log_archive_dest_9 string
log_archive_dest_state_1 string enable
log_archive_dest_state_10 string enable
log_archive_dest_state_11 string enable
log_archive_dest_state_12 string enable
log_archive_dest_state_13 string enable
log_archive_dest_state_14 string enable
log_archive_dest_state_15 string enable
log_archive_dest_state_16 string enable
log_archive_dest_state_17 string enable
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_state_18 string enable
log_archive_dest_state_19 string enable
log_archive_dest_state_2 string ENABLE
log_archive_dest_state_20 string enable
log_archive_dest_state_21 string enable
log_archive_dest_state_22 string enable
log_archive_dest_state_23 string enable
log_archive_dest_state_24 string enable
log_archive_dest_state_25 string enable
log_archive_dest_state_26 string enable
log_archive_dest_state_27 string enable
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_state_28 string enable
log_archive_dest_state_29 string enable
log_archive_dest_state_3 string enable
log_archive_dest_state_30 string enable
log_archive_dest_state_31 string enable
log_archive_dest_state_4 string enable
log_archive_dest_state_5 string enable
log_archive_dest_state_6 string enable
log_archive_dest_state_7 string enable
log_archive_dest_state_8 string enable
log_archive_dest_state_9 string enable
SQL> select status,error from v$archive_dest;
SQL> select status,error from v$archive_dest;
STATUS ERROR
--------- -----------------------------------------------------------------
VALID
BAD PARAM
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
STATUS ERROR
--------- -----------------------------------------------------------------
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
STATUS ERROR
--------- -----------------------------------------------------------------
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
31 rows selected.
SQL> show parameter db_unique_name
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_unique_name string primary
SQL> show parameter log_archive_dest_2
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_2 string service=standby LGWR SYNC AFFI
RM valid_for=(online_logfiles,
primary_role)
log_archive_dest_20 string
log_archive_dest_21 string
log_archive_dest_22 string
log_archive_dest_23 string
log_archive_dest_24 string
log_archive_dest_25 string
log_archive_dest_26 string
log_archive_dest_27 string
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_28 string
log_archive_dest_29 string
SQL> alter system set log_archive_dest_2='service=standby arch async valid_for(online_logfiles,primary_role) db_unique_name=standby';
alter system set log_archive_dest_2='service=standby arch async valid_for(online_logfiles,primary_role) db_unique_name=standby'
*
ERROR at line 1:
ORA-02097: parameter cannot be modified because specified value is invalid
ORA-16025: parameter LOG_ARCHIVE_DEST_2 contains repeated or conflicting
attributes
SQL> alter system set log_archive_dest_2='service=standby arch async valid_for(online_logfiles,primary_role)';
alter system set log_archive_dest_2='service=standby arch async valid_for(online_logfiles,primary_role)'
*
ERROR at line 1:
ORA-02097: parameter cannot be modified because specified value is invalid
ORA-16025: parameter LOG_ARCHIVE_DEST_2 contains repeated or conflicting
attributes
SQL> alter system set log_archive_dest_2='service=standby arch async valid_for=(online_logfiles,primary_role)';
alter system set log_archive_dest_2='service=standby arch async valid_for=(online_logfiles,primary_role)'
*
ERROR at line 1:
ORA-02097: parameter cannot be modified because specified value is invalid
ORA-16052: DB_UNIQUE_NAME attribute is required.
SQL> alter system set log_archive_dest_2='service=standby arch async valid_for=(online_logfiles,primary_role) db_unique_name=standby';
System altered.
SQL> alter system set log_archive_dest_state_2=enable;
System altered.
SQL> select status,error from v$archive_dest;
STATUS ERROR
--------- -----------------------------------------------------------------
VALID
VALID
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
STATUS ERROR
--------- -----------------------------------------------------------------
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
STATUS ERROR
--------- -----------------------------------------------------------------
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
31 rows selected.
SQL> alter system switch logfile;
System altered.
SQL> alter system switch logfile;
System altered.
SQL> alter system set log_archive_dest_2='service=standby lgwr async valid_for=(online_logfiles,primary_role) db_unique_name=standby';
System altered.
SQL> alter system set log_archive_dest_state_2=enable;
System altered.
------------------>>备库:
[oracle@dg trace]$ tnsping primary
TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 25-SEP-2014 15:14:56
Copyright (c) 1997, 2009, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.11.110)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = primary)))
OK (40 msec)
[oracle@dg trace]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Thu Sep 25 15:15:02 2014
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@dg trace]$ tail -f alert_standby.log
FAL[client]: Failed to request gap sequence
GAP - thread 1 sequence 33-33
DBID 1685534234 branch 848051550
FAL[client]: All defined FAL servers have been attempted.
-------------------------------------------------------------
Check that the CONTROL_FILE_RECORD_KEEP_TIME initialization
parameter is defined to a value that is sufficiently large
enough to maintain adequate log switch information to resolve
archivelog gaps.
-------------------------------------------------------------
[oracle@dg trace]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Thu Sep 25 15:20:03 2014
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> show parameter client
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
client_result_cache_lag big integer 3000
client_result_cache_size big integer 0
fal_client string primary
SQL>
SQL> alter system set fal_client=standby;
System altered.
SQL> alter system set fal_server=primary;
System altered.
----------------------------------------->>主库状态对照:
[oracle@dawn ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Thu Sep 25 14:47:52 2014
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select database_role,switchover_status from v$database;
DATABASE_ROLE SWITCHOVER_STATUS
---------------- --------------------
PRIMARY NOT ALLOWED
SQL>
SQL> select database_role,switchover_status from v$database;
DATABASE_ROLE SWITCHOVER_STATUS
---------------- --------------------
PRIMARY RESOLVABLE GAP
SQL> select database_role,switchover_status from v$database;
DATABASE_ROLE SWITCHOVER_STATUS
---------------- --------------------
PRIMARY TO STANDBY
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