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.
otma_open
Establishes a connection with IMS. Issue an otma_create before establishing an otma_open call.
otma_alloc
Creates an independent transaction session.
otma_send_receive
Sends to IMS and passes parameters for receive functions.
otma_free
Releases the independent transaction session.
otma_close
Ends the connection with IMS.