环境：Solaris 10 + Oracle 10.2.0.4

1.导出实例

导出sys用户下的`HIST_HEAD$`和`WRI$_OPTSTAT_HISTHEAD_HISTORY`两张表：
由于expdp尝试导出失败，改用传统exp导出,导出命令如下：
```
% nohup exp system/****** file=/tmp/jy/system_exp_2tables.dmp log=/tmp/jy/exp_system_exp_2tables.log tables=sys.HIST_HEAD\$, sys.WRI\$_OPTSTAT_HISTHEAD_HISTORY &
```
传统exp可以正常导出，导出过程显示如下：
```
Export: Release 10.2.0.4.0 - Production on 星期五 10月 30 13:49:51 2015

连接到: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

已导出 ZHS16GBK 字符集和 AL16UTF16 NCHAR 字符集

即将导出指定的表通过常规路径...

当前的用户已更改为 SYS

. . 正在导出表 HIST_HEAD$导出了 169225445 行

. . 正在导出表 WRI$_OPTSTAT_HISTHEAD_HISTORY



<h1 id="2">  2.参考内容 </h1>

文档 ID 553402.1

APPLIES TO:

Oracle Database - Enterprise Edition - Version 10.2.0.3 and later

Information in this document applies to any platform.

Checked for relevance on 29-Jan-2015

SYMPTOMS

DataPump export of table SYS.AUD$ fails with errors:

ORA-39165: Schema SYS was not found.

ORA-39166: Object AUD$ was not found.

ORA-31655: no data or metadata objects selected for job

Job "SYS"."SYS_EXPORT_TABLE_01" completed with 3 error(s) at 13:49:47

CAUSE

There is a restriction on dataPump export. It cannot export schemas like SYS, ORDSYS, EXFSYS, MDSYS, DMSYS, CTXSYS, ORDPLUGINS, LBACSYS, XDB, SI_INFORMTN_SCHEMA, DIP, DBSNMP and WMSYS in any mode. The Utilities Guide indicates the restriction only on full export mode, but the restriction actually applies to all modes.

SOLUTION

Export the table SYS.AUD$ using the traditional export:

> exp system/ file=dumpfile.dmp log=logfile.log tables=sys.aud$



<h1 id="3">  Reference </h1>

- DataPump Export (EXPDP) Fails With Error ORA-39165: Schema SYS Was Not Found (文档 ID 553402.1)

巴特西

Oracle如何导出sys用户下的系统表

1.导出实例

> exp system/ file=dumpfile.dmp log=logfile.log tables=sys.aud$

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