Open Transaction Manager Access (OTMA)

If you are using Open Transaction Manager Access (OTMA) to communicate with IMS, no special configuration is needed. However you can specify the amount of time that an OTMA client should wait for an MPR to process a message. The default is 120 seconds, but you can change this period using the environment variable ES_OTMA_TIMEOUT.

The Enterprise Server OTMA C/I (Call Interface) supports the following calls:
CALL FUNCTION otma_create
Creates storage structures to support communications but does not establish a connection with IMS.
Establishes a connection with IMS. Issue an otma_create before establishing an otma_open call.
Creates an independent transaction session.
Sends to IMS and passes parameters for receive functions.
Releases the independent transaction session.
Ends the connection with IMS.