Latest CUME PTF for IBM i 7.2 introduces significant LANSA performance issues

Date: 14 July 2015
Product/Release: LANSA for i - All versions
Abstract: PTF SI56247 is required for IBM i 7.2 to address slow connectivity issues introduced with CUME PTF.
Submitted By: LANSA Technical Support


After applying the latest CUME PTF level to IBM i 7.2, users have reported the following issues:

  • Slow superserver connections. Superserver connections are slower, taking one to three minutes to connect.
  • Web jobs are taking one to three minutes to connect.
  • Exiting out of LANSA after opening a new green screen session can take over a minute.


IBM have produced a PTF to resolve this issue. The PTF is SI56247. Ensure that you are at a CUME PTF level that includes this PTF.

Search the IBM web site ( for SI56247.