[MEMORY] Derby full fill my the JVM memory

[yves pielusenet]

Hello,
I have this error : java.lang.OutOfMemoryError: Java heap space
So I used a profiler to see what was wrong. I have very lots of object
of that classes :
org.apache.derby.impl.store.raw.data.StoreRecordHeader
org.apache.derby.impl.store.raw.data.RecordId
(I can't find those classes into derby javadoc :c( )

I use derby-10.1.2.

Here is my database :
CREATE TABLE data (
   typecarnet VARCHAR(100) NOT NULL,
   instance INTEGER NOT NULL,
   numvign INTEGER NOT NULL,
   lastvign INTEGER NOT NULL,
   data BLOB NOT NULL
)

Into de BLOB data, I store serialized objects.

So, what are those object : StoreRecordHeader and RecordId
What should I care about when I store serializable objects ?

thanks

-- 
yves piel