Re: how to improve impdp

On 16/07/13 21:39, Hsieh, Joan wrote:
> I have managed to drop all the tables and all views, it is much faster than drop user cascade. However, there are a lot of SYS_LOB%$$
> LOBSEGMENT left. I couldn't find any drop statement to drop all these LOB objects. Does anyone know how?

I have seen this very problem on 11.2.0.3 numerous times. If you query DBA_OBJECTS then you will see the LOB Segments still present.

However, they are actually in the recycle bin, so:

purge dba_recyclebin;

if you are a SYSDBA type user will clear them out. If you are a normal users then

purge recyclebin;

will clear out the ones owned by your current user.

It drove me nuts for ages until I sat down and figured out where these things were actually "living" after I had dropped the tables. Funny thing was, I drop the tables with PURGE to bypass the recycle bin - but the LOBs seem to like the bin and stick around until purge time. I have no idea why this happens.

HTH Cheers,
Norm.

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Norman Dunbar
Dunbar IT Consultants Ltd

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