Hotfixes are cumulative. This is the second hotfix for Substation ES 2.12.1.

You can download Hotfix #2 from the TIBCO Support Customer Portal Web UI (https://support.tibco.com).
Log in using your username and password for the TIBCO Support Web page. 

  Select Download
  Select Hotfixes
  Select AvailableDownloads
  Select Mainframe
  Select Substation
  Select 2.12.1
  Select hotfix-2

You should then be able to see and download the files.

TIB_substation_2.12.1_zos.sxs.hotfix_#2.zip

TIB_substation_2.12.1_readme_hotfix.txt

Please note: Non-DFSMSdss installation packages are available by request only.

Listed below is a summary of updates included. Please refer to the associated readme document for any additional information.

================================================================================
Closed Issues in 2.12.1 hotfix#2 (This Release)

  Defect corrections:

  SSES-1719 - Critical
  
  The RED CICS region startup was forced to use system default HUB. The RED module
  SXXACRM has been modified to pass the HUB name correctly. 
  Also fixed were other RED internal memory issues within RED modules.


  SSES-1715 - Critical
  
  Fixed CICS region shutdown abends when executing the PLT shutdown.