CCS Message Services will not start. Failed to start Apache ActiveMQ

Products

• COMMON SERVICES FOR Z/OS
• Common Services

Issue/Introduction

Installed the most recent Common Services 15.0 with maintenance.

When I try to start ZMSHUB, the STC runs and immediately completes with a RC=0, but the STC does not keep on executing as an address space.

Is this its normal behavior ?

The hubnode.log file shows the following errors:

INFO  [2020-06-04 02:40:56.131] [Message Service USS Hub] - [org.apache.activemq.broker.TransportConnector:start:263] [main] - Connector tcp started 
INFO  [2020-06-04 02:40:56.133] [Message Service USS Hub] - [org.apache.activemq.broker.BrokerService:doStartBroker:773] [main] - Apache ActiveMQ 5.15.3 (messageServiceHubNode, ID:sysx.siteid.com.ab-12345-13digits-x:y) started 
INFO  [2020-06-04 02:40:56.133] [Message Service USS Hub] - [org.apache.activemq.broker.BrokerService:doStartBroker:774] [main] - For help or more information please see: http://activemq.apache.org 
WARN  [2020-06-04 02:40:56.134] [Message Service USS Hub] - [org.apache.activemq.broker.BrokerService:checkUsageLimit:2141] [main] - Store limit is 102400 mb (current store usage is 0 mb). The data directory: /_PRDS/CCS/CCSZFS/cfgb/instance/messageServiceHub/data only has 43 mb of usable space. - resetting to maximum available disk space: 43 mb 
ERROR [2020-06-04 02:40:56.136] [Message Service USS Hub] - [org.apache.activemq.broker.BrokerService:start:639] [main] - Failed to start Apache ActiveMQ (messageServiceHubNode, ID:sysx.siteid.com.ab-12345-13digits-x:y)
java.lang.NullPointerException: null
 at org.apache.activemq.broker.BrokerService.checkUsageLimit(BrokerService.java:2087) ~[message-service-hub-node.jar:na]

Environment

Release : 15.0
Component : CCS MESSAGE SERVICE

Cause

Improper definition of OMVS Segment for the userid under which the ZMSHUB task is running.

Look for following messages in joblog (SYSOUT) that may be an indicator of this problem:

JVMJZBL1006I PWD =
 JVMJZBL2999T Setting current working dir to: ""
JVMJZBL2999W Could not set current directory to:

Resolution

Have your security administrator review the security setting for the userid that the task is running under.

Have a look at the documented security setup in Configure Message Service Hub for z/OS

Make certain that the userid has a valid OMVS segment defined and that the OMVS HOME Directory is defined and accessible to the id.