Oracle Faq(Oracle的字符集问题)
1、在建库时，catproc一定要运行，否则用rman时会出现如下字符集的错误：
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database: ORA-06553: PLS-213: package STANDARD noe
RMAN-04015: error setting target database character set to ZHS16CGB231280
如果建库时没有问题，那么可以Re-run catproc.sql. This will in turn call the dbmsbkrs.sql script which creates the dbms_backup_restore package.
2、中文字符集说明
ZHS16CGB231280 CGB2312-80 16-bit Simplified Chinese MB, ASCII
ZHS16GBK GBK 16-bit Simplified Chinese MB, ASCII, UDC
简单地说ZHS16GBK是ZHS16CGB231280的超集。
一九九○年中国、日本、韩国共同制定的统一东亚表意文字字符集，即常称的国标扩展码字符集（GBK）。
3、如何避免中文支持问题
我们的一贯建议是在建库时就做好规划，这样以后就不会有问题了。
1)create database
character set ZHS16GBK
national character set ZHS16GBK
2)环境变量：NLS_LANG=american_america.ZHS16GBK
最好export NL2004-10-20_FORMAT='YYYY-MM-DD HH24:MI:SS'指明日期格式；
3)如果建库时指定了props$中characterset肯定就是ZHSS16GBK了：
NLS_CHARACTERSET ZHS16GBK
NLS_NCHAR_CHARACTERSET ZHS16GBK
如果不是可以使用update改变，但这样做对于已有数据会有影响，甚至会导致整个数据库不能用，所以还是在建库之后就进行验证，一个好的DBA就是能够尽量避免问题的发生，而不是等到出了问题再去救火。
如此一来就不会再有字符集和中文支持的问题了。还有问题吗？和我联系：）
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