11.15 Release Compatibility Error

The Oracle Tuxedo system returns TPERELEASE in tperrno(5) if a compatibility issue exists between multiple releases of an Oracle Tuxedo system participating in an application domain.

For example, the TPERELEASE error may be returned if the TPACK flag is set when issuing the tpnotify(3c) function (indicating that the caller blocks until an acknowledgment message is received from the target client), but the target client is using an earlier release of the Oracle Tuxedo system that does not support the TPACK acknowledgment protocol.