CentOS Data Guard数据库更改字符集备库需要单独操作
在向大家详细介绍CentOS Data Guard 之前,首先让大家了解下CentOS Data Guard ,然后全面介绍CentOS Data Guard ,希望对大家有用。[实验]CentOS Data Guard环境下修改数据库字符集 环境.
VMWARE OS:CentOS 5.3 Primary:Oracle 10.2.0.1.0 Standby:Oracle 10.2.0.1.0
CentOS Data Guard下面的操作均在Primary上,不会影响到Standby DB,备库需要单独操作。数据库更改字符集:源字符集CentOS Data Guard目标字符集WE8ISO8859P1 --> AL32UTF8AL16UTF16 --> AL16UTF16
<方法一>:由于目标CentOS Data Guard字符集不是源字符集的超集,所以导致失败
Startup nomount; Alter database mount exclusive; Alter system enable restricted session; Alter system set job_queue_processes=0;** Alter database open; Alter database character set AL32UTF8;
在最后一步报错,内容为目标字符集不是源字符集的超集过程:
SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> startup nomount; ORA-32004: obsolete and/or deprecated parameter(s) specified ORACLE instance started.
Total System Global Area 272629760 bytes Fixed Size 1218920 bytes Variable Size 92276376 bytes Database Buffers 176160768 bytes Redo Buffers 2973696 bytes SQL> Alter database mount exclusive;
Database altered. SQL> Alter system enable restricted session; System altered. SQL> Alter system set job_queue_processes=0; System altered. SQL> Alter database open; Database altered. SQL> Alter database character set AL32UTF8; Alter database character set AL32UTF8 ERROR at line 1: ORA-12712: new character set must be a superset of old character set
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