Robert,

> If you add these to FBBlobField, that should do it. Until then, if
> you use Blob's with much data, I would NOT cache prepared
> statements.

Do you cache prepared statement in auto-commit mode? Because large
strings (max. length is 32k though) and cached blobs (auto-commit
case, in non-autocommit case we store only blob ID) seems to be the
only thing worth freeing (other data types consume less memory than
FBField object itself).

I will check where it would be better to release objects for garbage
collection.

Best regards,
Roman