BLOB files, Updates, ... 2nd Edition

Hello everybody,

There are more things I do not understand:

In my last letter I wrote that I save empty BLOB as NULL. And I wrote that the number of files is the same as bevore.
WRONG:After the converting there are MORE  
files :( Tell me a way to fight agains this.

2nd problem is: If I try to read one of this BLOBS with ResultSet.getBinaryStream() I get an error message like
"relation0 does not exist". Sure it does not exist. It's  
NULL.... But to avoid this exception I have to use ResultSet.wasNull(). But this function is not available BEVORE I
useda getXXX-methode. And AFTER using a  
getXXX-methode it's to late.

Any idears?

I use: Postgressql 7.0.3 with driver jdbc7.1-1.3.jar

Hope you can help me...

Greetings
Joerg Sommer

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