Thread: invalid large obj descriptor(0)

help

I use Zeos library for C++ builder to interact with postgre server...
(it uses libpq)
when I post a blob data it fails on ApplyChanges() with
"invalid large obj descriptor(0)" error...

AutoCommit is set to false. So i dont know what is a problem.....

by the way... i've insert data with lo_import from psql's console and
everethig is ok... but when my program selects this data it fails with same
(invalid large obj descriptor) error

help
thanks

PS.
ODBC with BDE have same effect
also
servers 7.2 for win
7.3.1 for win
7.2 for linux
have same effect too

"Pavel Eremenko" <napaulm@shark.east.ru> writes:
> I use Zeos library for C++ builder to interact with postgre server...
> (it uses libpq)
> when I post a blob data it fails on ApplyChanges() with
> "invalid large obj descriptor(0)" error...

From a backend perspective, this almost certainly means that you're
failing to wrap the sequence of large-object operations into a
single transaction.

> AutoCommit is set to false. So i dont know what is a problem.....

No idea here either; perhaps studying the Zeos library's documentation
some more will help.
        regards, tom lane