What to do when getting messages XCOMM0597E and/or XCOMM0599E during a transfer

Document ID : KB000017684
Last Modified Date : 14/02/2018
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Description:

This document explains how to react on messages XCOMM0597E and XCOMM0599E and the XCOM transfer is terminating.

Solution:

When a XCOM transfer ends with message:


 XCOMM0597E ... TOTAL TASK LIMIT EXCEEDED ON INCOMING ALLOCATE - TRANSFER TERMINATED       
 or 
 XCOMM0599E TOTAL TASK LIMIT EXCEEDED ON LOCAL ALLOCATE - TRANSFER DELAYED

then XCOM has reached the maximum number of concurrent transfers which are possible at one point in time. You can try to retransfer at a later point in time using the rescheduling feature. But you might review the limits for concurrent transfers.

For XCOM for z/OS these limits are specified in these three parameters of the CONFIG-member:

  • MAXLOC

    This parameter specifies the maximum number of locally initiated transfers that can be active at one time.
    The default is 75, values can be from 1 to 9999

  • MAXREM

    This parameter specifies the maximum number of remotely initiated transfers that can be active at one time.
    The default is 75, values can be from 1 to 9999

  • MAXTASK

    This parameter specifies the maximum number of file transfers that the CA XCOM Data Transport server can perform concurrently.
    The default is 150, values can be from 1 to 9999

Running XCOM 11.6 you can change these three parameters dynamically using the MODIFY, /f xcomstc,DFLT, command as described in the User Guide in Section "Using the Modify commands" on page 336. For example, if you want to change the value for MAXREM to 100 the command would be:


  /F xcom,DFLT,MAXREM,100 

For a permanent change of the value you can update the CONFIG member and restart the XCOM Server region.