Service Bulletin 153: PK14527 May Cause CRUISE Restore Problems

Specifying ZMODE T activates FARF6 8-byte file addressing for TPFDF files. PK14527 implemented a change in the layout of the 8-byte file address tape control block of CRUISE. This layout is used in CRUISE capture if ZMODE T is set.

Since the position of the control block indicator has been changed, tapes captured prior to the installation of PK14527 can no longer be restored if "ZMODE T" is set. PK14527 did not provide a "compatibility mode" in CRUISE. However, APAR PK50078 provides that compatibility, where tapes captured prior to the installation of PK14527 can be read and properly processed

If you have, or are planning to enter ZMODE T, then review the following:

• If you have already installed both PK14527 (PUT 21) and PK50078 (PUT 23), then no action is needed
  
• If you have already installed PK14527, but not PK50078, then ensure you no longer have a need to restore pre-PK14527 CRUISE capture tapes. If the restore of a pre-PK14527 capture tape may be still be required, do one of the following:
  • re-execute all CRUISE captures. Be prepared to fallback from PK14527 if the restore of a pre-PK14527 capture tape becomes necessary before this has been completed, or
  • install PK50078
    
• If you have not already installed PK14527, then do one of the following:
  • install PK50078 simultaneously with PK14527, or
  • be sure to re-execute all CRUISE captures as soon as possible after installing PK14527. You should be prepared to fallback from APAR PK14527 in case the restore of a pre-PK14527 capture tape becomes necessary before this has been completed.

For questions or concerns about the information in this service bulletin, send an e-mail to TPFQA@US.IBM.COM