Specifying an OTMA ACEE aging value in the IMS Connect configuration member

You can configure IMS Connect to pass accessor environment element (ACEE) aging values to OTMA. ACEE aging values ensure that OTMA refreshes cached RACF® ACEEs at appropriate frequencies for your installation.

The ACEE contains user IDs and other security information. OTMA caches the ACEE to improve the performance of the security checking that OTMA performs. The ACEEs are used to validate the authority of the user IDs included with the input messages passed by IMS Connect to the transactions and commands being requested.

To ensure that this security information is correct, OTMA automatically refreshes an ACEE with the security information that is stored in RACF when z/OS® notifies IMS that the security information was modified. However, OTMA also refreshes ACEEs at defined intervals, regardless of whether z/OS notifies IMS of changes. The interval between refreshes of the ACEE is determined by the ACEE aging value, which is set in OTMA.

To define an ACEE aging value for IMS Connect to pass to OTMA, use the OAAV= keyword in the DATASTORE configuration statement of the IMS Connect PROCLIB member, HWSCFGxx. You can specify a value from 300 to 999999 seconds. The default is 999999 seconds. OTMA requires a value of at least 300 to enable ACEE refreshes. The aging value that is specified on the OAAV= keyword is overridden in the following situations:
  • If you issue the /SECURE OTMA ACEEAGE command without using the TMEMBER parameter to specify an OTMA client.
  • If you issue the /SECURE OTMA ACEEAGE command and specify IMS Connect by using the TMEMBER parameter.