ORACLE数据库备份错误 LRM-00108: invalid positional parameter value 'as'
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用sys用户进行全库备份时，系统一直提示 LRM-00108错误
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?? [oracle@net test]$ exp sys/oracle as sysdba? file=DB_20101015_BAK.dmp full=y log=exp.log
LRM-00108: invalid positional parameter value 'as'
EXP-00019: failed to process parameters, type 'EXP HELP=Y' for help
EXP-00000: Export terminated unsuccessfully
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?解决办法：
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??? 用单引号将用户名和密码括起来，注意要加上转义符 \
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?exp \'sys/oracle as sysdba\'? file=DB_20101015_BAK.dmp full=y log=exp.log
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