共计 672 个字符,预计需要花费 2 分钟才能阅读完成。
原因
导入数据时报错以下错误,这是因为原来的数据库是GBK的,每个汉字两个字节,但新数据库是UTF-8的,每个汉字是三个字节,导致超过长度了。
ORA-12899: value too large for column (actual: 27, maximum: 20)
解决
开始–>运行–>cmd,之后输入:”sqlplus /nolog”,进入”SQL>”的提示,按照下面给出的命令依次执行就可以了:
SQL>connect username/password as SYSDBA;
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
报字符集不兼容,此时下INTERNAL_USE指令不对字符集超集进行检查:
SQL>ALTER DATABASE CHARACTER SET INTERNAL_USE ZHS16GBK;
SQL>SHUTDOWN IMMEDIATE;
SQL>STARTUP;
正文完