3.3.5.4.5 Receiving an XAUSER_XACT_MTAG_START_NO_MEM Message
When the XA Superior Transaction Manager receives an XAUSER_XACT_MTAG_START_NO_MEM message, it MUST perform the following actions:
If the State field of the XA Transaction Object referenced by the receiving connection is set to Suspended:
Signal the Disconnect Connection event using the receiving Connection as the argument.
Return XAER_RMERR from xa_start call.
Otherwise:
Signal the Disconnect Connection event using the receiving Connection as the argument.