Constraint oddity

I wonder if anyone has seen this before
1 select constraint_name,table_name from all_constraints
2* where constraint_type='?'
SQL> /

CONSTRAINT_NAME TABLE_NAME
------------------------------ ------------------------------
SYS_C001088 AQ$_REPLAY_INFO

We don't use AQ. its a 9206 SE database. 

-- 
Niall Litchfield
Oracle DBA
http://www.niall.litchfield.dial.pipex.com

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http://www.freelists.org/webpage/oracle-l

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