This is a question more suitable for firebird-java
(
https://groups.google.com/g/firebird-Java).
But to answer it: you can't, except on a low-level (i.e. not within the
JDBC API). And non-inline blobs are materialized on demand, unless
you're doing something that requires a cached result set (e.g.
requesting a scrollable result set, and you haven't set connection
property scrollableCursor=SERVER).
If you need more information, or if I misunderstood your question,
please post to firebird-java instead.
Mark
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Mark Rotteveel