1.oracle server端字符集查询
server字符集修改:
将数据库启动到RESTRICTED模式下做字符集更改:
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 ZHS16GBK;
ALTER DATABASE CHARACTER SET ZHS16GBK ERROR at line 1:
ORA-12712: new character set must be a superset of old character set
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