gtpd2m0tData Communications Services Reference

Data Usage and I/O

Two record types are used by UMP: the Unsolicited Message Directory (CO1DR) and the Unsolicited Notification List (CO3NL). The former is a series of fixed records that are shared by all the processors in a loosely coupled (LC) complex and the latter are Pool records.

File Organization

As presently implemented, there are four primary directory records allocated in the system. Where a heavy use of this package is anticipated, this number may be inadequate. For more information, see Performance Considerations.

Initialization Requirements

Before this function is used, the Directory records must be initialized by using the command provided, ZIUMP. The records are not immediately initialized after the message is issued (in 1052 state). The initialization itself takes place when the system is cycled up to a state with GFS activity (above 1052 state).