Re: "Bad" object ids in x$bh?

Steve,

I am not sure about all of the objects, so this is a partial answer. x$bh.obj = 0 seems to be an unused(?) block. Undo segments have an extremely high value (4294967295) in my test db.

Have you tried associating the block/file info in these phantom cache objects to block/file info in dba_extents?

Daniel Fink

Steve Rospo wrote:

> Anybody know what the blocks in x$bh are that don't map to rows in
> DBA_OBJECTS? I have 172 objects in x$bh that I can't account for.
>
> SQL> SELECT count(obj), count(object_id)
> 2 FROM (SELECT DISTINCT bh.obj, ob.object_id
> 3 FROM sys.x_$bh bh,
> 4 dba_objects ob
> 5 WHERE bh.obj = ob.object_id(+));
>
> COUNT(OBJ) COUNT(OBJECT_ID)
> ---------- ----------------
> 2243 2071
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Daniel Fink
  INET: Daniel.Fink_at_Sun.COM

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