In this Document
  Symptoms 
  Cause 
  Solution 
  References  
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Applies to: 
 Oracle Server - Enterprise Edition - Version 10.2.0.3 and later
 Information in this document applies to any platform.
 ***Checked for relevance on 23-NOV-2012*** 
 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/<password> file=dumpfile.dmp log=logfile.log tables=sys.aud$
 Other options are:- use CTAS (Create Table As Select) to copy the SYS.AUD$ data into a non-restricted schema.
- use the DBMS_AUDIT_MGMT package of Audit Vault to manage and purge audit data (see Note 731908.1). This allows for the facility to move the AUD$ table out of the SYSTEM tablespace, which can negate the need to export the table.
NOTE: This issue also applies to other SYS owned auditing tables such as FGA_LOG$
References
 BUG:5647223 - DATAPUMP EXPORT FAILS ORA-31655
 NOTE:731908.1 - New Feature DBMS_AUDIT_MGMT To Manage And Purge Audit Information