三思而后行sql> shutdown immediate sql> startup mount sql> alter system enable restricted session; sql> alter system set job_queue_processes=0; sql> alter system set aq_tm_processes=0; sql> alter database open; sql> alter database character set <internal_use> AL32UTF8; sql> shutdown immediate sql> startup
这样直接修改有没有影响,不是很看得懂,是改完后exp出来再导入新库吗
alter database character set <internal_use> AL32UTF8; 里面的<internal_use> 是什么意思? 我用alter database character set AL32UTF8; 提示:错误ora-12712:新字符集必须为旧字符集的超集
sql> startup mount
sql> alter system enable restricted session;
sql> alter system set job_queue_processes=0;
sql> alter system set aq_tm_processes=0;
sql> alter database open;
sql> alter database character set <internal_use> AL32UTF8;
sql> shutdown immediate
sql> startup
里面的<internal_use> 是什么意思?
我用alter database character set AL32UTF8;
提示:错误ora-12712:新字符集必须为旧字符集的超集
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