建站服务器
两台服务器构成的Oracle 11gR2 RAC环境中，其中rac1服务器的私有网卡需要更换，所以在rac2服务器上使用dbca创建数据库的时候只创建了本节点的数据库实例(oracledb1)。当rac1服务器私有网卡更换成功，在rac1服务器执行dbca图形化add Instance和执行dbca -silent命令添加实例，都收到下面的报错：
[oracle@rac1 ~]$ dbca -silent -addInstance -gdbName oracledb -nodelist rac1 -instanceName oracledb2 -sysDBAUserName sys -sysDBAPassword oracle_Schic1 Look at the log file /u01/app/oracle/cfgtoollogs/dbca/oracledb.log for further details.
[oracle@rac1 ~]$ cat /u01/app/oracle/cfgtoollogs/dbca/oracledb.logAdding instance operation on the admin managed database oracledb requires instance configured on local node. There is no instance configured on the local node rac1.
该操作放在现有的RAC节点rac2上执行应该就可以了。不过下面我们继续讨论手动在rac1上添加oracledb2实例的步骤：
由于rac2运行着oracledb1实例，所以这里先添加rac1的oracledb2实例，之后再做调整。
1.尝试直接在rac1上启动oracledb2实例。
[root@rac1 bin]# su – oracle[oracle@rac1 ~]$ export ORACLE_SID=oracledb2[oracle@rac1 ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Fri Nov 9 02:29:36 2012
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startupORA-29760: instance_number parameter not specified
instance_number的内容参考文章：http://space.itpub.net/23135684/viewspace-748572
2.确保rac1的ASM实例加载了相关磁盘组。
[root@rac2 bin]# ./crsctl stat res -t——————————————————————————–NAME TARGET STATE SERVER STATE_DETAILS ——————————————————————————–Local Resources——————————————————————————–ora.ARCH.dg OFFLINE OFFLINE rac1 ONLINE ONLINE rac2 ora.DATA.dg OFFLINE OFFLINE rac1 ONLINE ONLINE rac2 ……ora.asm ONLINE ONLINE rac1 Started ONLINE ONLINE rac2 Started ……ora.oracledb.db 1 ONLINE ONLINE rac2 Open ……[root@rac2 bin]# ./srvctl start diskgroup -g data -n rac1[root@rac2 bin]# ./srvctl start diskgroup -g arch -n rac1[root@rac2 bin]# ./crsctl stat res -t——————————————————————————–NAME TARGET STATE SERVER STATE_DETAILS ——————————————————————————–Local Resources——————————————————————————–ora.ARCH.dg ONLINE ONLINE rac1 ONLINE ONLINE rac2 ora.DATA.dg ONLINE ONLINE rac1 ONLINE ONLINE rac2 ……
3.调整RAC参数文件。
[root@rac2 bin]# su – oracle[oracle@rac2 ~]$ export ORACLE_SID=oracledb1[oracle@rac2 ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Fri Nov 9 02:34:18 2012
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 – 64bit ProductionWith the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,Data Mining and Real Application Testing options
SQL> create pfile=\’/tmp/opfile.txt\’ from spfile=\’+DATA/oracledb/spfileoracledb.ora\’;
File created.
SQL> !vi /tmp/opfile.txt
oracledb1.__db_cache_size=60263759872oracledb1.__java_pool_size=134217728oracledb1.__large_pool_size=134217728oracledb1.__pga_aggregate_target=39728447488oracledb1.__sga_target=68719476736oracledb1.__shared_io_pool_size=0oracledb1.__shared_pool_size=7784628224oracledb1.__streams_pool_size=0*.audit_file_dest=\’/u01/app/oracle/admin/oracledb/adump\’*.audit_trail=\’db\’*.cluster_database=true*.compatible=\’11.2.0.0.0\’*.control_files=\’+DATA/oracledb/controlfile/current.260.798857565\’*.db_block_size=8192*.db_create_file_dest=\’+DATA\’*.db_domain=\’\’*.db_name=\’oracledb\’*.diagnostic_dest=\’/u01/app/oracle\’*.dispatchers=\'(PROTOCOL=TCP) (SERVICE=oracledbXDB)\’oracledb1.instance_number=1oracledb2.instance_number=2*.log_archive_dest_1=\’LOCATION=+arch\’*.log_archive_format=\’%t_%s_%r.dbf\’*.open_cursors=300*.pga_aggregate_target=39625687040*.processes=5000*.remote_listener=\’wstrac.scan.com:1521\’*.remote_login_passwordfile=\’exclusive\’*.sessions=5505*.sga_target=68719476736oracledb1.thread=1oracledb2.thread=2oracledb1.undo_tablespace=\’UNDOTBS1\’oracledb2.undo_tablespace=\’UNDOTBS2\’~/tmp/opfile.txt 34L, 1103C written
上面加红的部分是新增加的内容。
SQL> shutdown immediateDatabase closed.Database dismounted.ORACLE instance shut down.SQL> create spfile=\’+DATA/oracledb/spfileoracledb.ora\’ from pfile=\’/tmp/opfile.txt\’;
File created.SQL> startupORACLE instance started.
Total System Global Area 6.8413E+10 bytesFixed Size 2245480 bytesVariable Size 8053066904 bytesDatabase Buffers 6.0264E+10 bytesRedo Buffers 93609984 bytesDatabase mounted.Database opened.
增加的参数的含义也参考文章：http://space.itpub.net/23135684/viewspace-748572
4.确保创建了UNDOTBS2表空间。
SQL> select file_id,file_name from dba_data_files;
FILE_ID———-FILE_NAME——————————————————————————– 4+DATA/oracledb/datafile/users.259.798857305
3+DATA/oracledb/datafile/undotbs1.258.798857305
2+DATA/oracledb/datafile/sysaux.257.798857305
FILE_ID———-FILE_NAME——————————————————————————– 1+DATA/oracledb/datafile/system.256.798857305
5+DATA/oracledb/datafile/undotbs2.266.798863859
5.再次尝试启动rac1上的oracledb2实例。
SQL> startupORACLE instance started.
Total System Global Area 6.8413E+10 bytesFixed Size 2245480 bytesVariable Size 6979325080 bytesDatabase Buffers 6.1338E+10 bytesRedo Buffers 93609984 bytesORA-01618: redo thread 2 is not enabled – cannot mount 需要启用 redo thread 2。
6.启用redo thread 2。
以下的操作一定在现存的RAC节点实例上执行（在添加的节点上无法执行），也就是说在rac2节点的oracledb1实例上执行以下命令：
SQL> ALTER DATABASE 2 ADD LOGFILE THREAD 2 GROUP 4 3 (\’+DATA\’) SIZE 256M;
Database altered.
SQL> ALTER DATABASE 2 ADD LOGFILE THREAD 2 GROUP 5 3 (\’+DATA\’) SIZE 256M;
Database altered.
SQL> ALTER DATABASE 2 ADD LOGFILE THREAD 2 GROUP 6 3 (\’+DATA\’) SIZE 256M;
Database altered.
SQL> alter database enable thread 2;
Database altered.
要启动thread 2，必须先为thread 2创建好日志组。
参考文章：http://space.itpub.net/7199859/viewspace-663572
7.加载rac1 oracledb2实例并打开数据库。
SQL> alter database mount;
Database altered.
SQL> alter database open;
Database altered.
经过以上的步骤，成功为rac1节点添加了oracledb2实例。
8.将实例信息添加到OCR中。
[root@rac1 bin]# su – oracle[oracle@rac1 ~]$ srvctl add instance -d oracledb -i oracledb2 -n rac1[oracle@rac1 ~]$ srvctl status database -d oracledbInstance oracledb2 is not running on node rac1Instance oracledb1 is running on node rac2[oracle@rac1 ~]$ srvctl start instance -d oracledb -i oracledb2[oracle@rac1 ~]$ srvctl status database -d oracledbInstance oracledb2 is running on node rac1Instance oracledb1 is running on node rac2
9.调整OCR中实例运行节点。
经过上面的添加后，rac1运行着oracledb2实例，rac2运行着oracledb1实例，执行下面的步骤，使得rac1运行oracledb1实例，rac2运行oracledb2实例。
[oracle@rac1 ~]$ srvctl stop database -d oracledb[oracle@rac1 ~]$ srvctl remove instance -d oracledb -i oracledb1Remove instance from the database oracledb? (y/[n]) y[oracle@rac1 ~]$ srvctl remove instance -d oracledb -i oracledb2Remove instance from the database oracledb? (y/[n]) y[oracle@rac1 ~]$ srvctl add instance -d oracledb -i oracledb1 -n rac1[oracle@rac1 ~]$ srvctl add instance -d oracledb -i oracledb2 -n rac2[oracle@rac1 ~]$ srvctl start database -d oracledb[oracle@rac1 ~]$ srvctl status database -d oracledbInstance oracledb1 is running on node rac1Instance oracledb2 is running on node rac2[oracle@rac1 ~]$ srvctl enable database -d oracledbPRCC-1010 : oracledb was already enabledPRCR-1002 : Resource ora.oracledb.db is already enabled[oracle@rac1 ~]$ srvctl enable instance -d oracledb -i oracledb1[oracle@rac1 ~]$ srvctl enable instance -d oracledb -i oracledb2
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