Got minus one from a read call

weblogic.common.resourcepool.ResourceDeadException: 0:weblogic.common.ResourceException: Could not create pool connection. The DBMS driver exception was: Got minus one from a read call

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they suggest:

I also had this kind of error. I suppose that the root cause was the leak of available sessions on the oracle side. My glassfish server had 400-connection jdbc pool size and Oracle 10g had following parameters:
processes = 420
sessions = 467
transactions = 514
Every request to the DB failed with "IO Exception: Got minus one from a read call".
Increasing Oracle values (processes = 450; sessions = 500; transactions = 550) fixed the problem.