ORA-56600: DRCP Illegal call.

Hello,

We are seeing ORA-56600 DRCP: Illegal Call [First call inconsistency] messages in our apache log. Unfortunately i cannot found nothing to find what is the problem

This problem came out of nowhere, has not been updated the BD servers or applications server, or the php application.

I think is the same case of: https://community.oracle.com/message/3402545#3402545

The occurence is random and the error happens at the first SQL in the script, no matter what the actual SQL is.

The reload of the page works and the same SQL is executed OK

"Does anyone have any ideas what to do next in order to hunt down the cause of this error? Or anybody knows what the error message actually means?"