Callout and OTMA parallel processing of RESUME TPIPE requests

You can increase the throughput of outgoing callout request messages by enabling OTMA parallel processing of RESUME TPIPE requests.

By default, OTMA tpipes support only a single active RESUME TPIPE request at a time. If more RESUME TIPE requests are received, OTMA queues them to the tpipe and they remain in active until the active RESUME TPIPE request terminates. When the outgoing volume of callout messages is high, the OTMA tpipe can become a bottleneck.

When an OTMA tpipe supports multiple active RESUME TPIPE requests and multiple clients issue RESUME TPIPE requests to the tpipe, OTMA can send the callout messages to multiple clients in parallel.

Support for the parallel processing of RESUME TIPE requests can be enabled by specifying MULTIRTP=Y in an OTMA client descriptor. MULTIRTP=Y can be defined as the default for all OTMA clients by using the DFSOTMA system client descriptor.

A maximum number of active RESUME TPIPE requests can be set by specifying the LIMITRTP parameter in the OTMA client descriptors.

Support for parallel processing of RESUME TPIPE requests can also be enabled in IMS Connect by specifying MULTIRTP=Y in the definition of the data store connection to OTMA. MULTIRTP=Y can also be specified as the default for all connections from an IMS Connect in the system configuration of an IMS Connect instance.