ADM11001E DB2 did not create a memory segment for running fenced routines

Question:We are carrying out an application installation.  The installation is failing with the following message in the .nfy   file  .

 ADM11001E DB2 did not create a memory segment for running fenced routines. This was specified by the use of DB2_FMP_COMM_HEAPSZ registry variable.

How can I bypass these errors to allow the installation to finish?

Answer: I’ve seen this problem plenty of times where a DBA has set the DB2 registry value :  DB2_FMP_COMM_HEAPSZ=0. On many occasions , it is to force fenced routines such as the DB2 Health Monitor :Monitor health of instance and databases   to not run.

It is also commonly used as a method to decrease the DB2 footprint size

To stop the ADM11001E error occurring  and if DB2_FMP_COMM_HEAPSZ = 0 , then the simple fix is to change the DB2 registry variables

To change the registry value , you can either change the value

db2set DB2_FMP_COMM_HEAPSZ=my_new_value

Or delete the variable

db2set DB2_FMP_COMM_HEAPSZ=

Read More on DB2 Health Monitor and Analyzing a DB2 trap file

DB2 Health Monitor-Monitor Heap Utilization - DBA DB2

Analyzing a DB2 trap file - DBA DB2