JDBCR4 JVM Creation fails

IBMi Version V7R3 and current on PTF's
JDBCR4 version - not sure but I have downloaded again from Scott's web
site.

I have a service program that connects to a MS SQL server and retrieves a
list of records, converts the results into json using yajl and returns the
string.

If I run this from the command line it works perfectly.

If I call externally using XMLSERVICE it fails.

I have run the process in debug and in JDBCR4 the procedure start_jvm()
used to start the JVM , it simply calls the java method java.lang.String
with wwStr = s('Temp String'); which should start a JVM if there is not
already one running.

I have pasted the joblog below.

I have tried submitting the same process to batch using the same job
description (library list) and running under the same user profile and it
completes normally.

I have looked at the dump files created but none of the content is
meaningful to me or for that matter indicates a reason for the failure.

Any suggestions most welcomed - I have been going in circles with this for
quite a while!!

Java Virtual Machine is IBM Technology for Java. PID(15710)
Object domain or storage protection error for offset X'000000002B25B800'
in object XTOOLKIT PHPUSER 065558.
JVMDUMP039I Processing dump event "gpf", detail "" at 2018/04/18 07:50:46
- please wait.■
IBM Java[15710]: JVMDUMP039I Processing dump event "gpf", detail "" at
2018/04/18 07:50:46 - please wait.■
JVMDUMP032I JVM requested System dump using
'//core.20180418.075046.15710.0001.dmp' in response to an event■
IBM Java[15710]: JVMDUMP032I JVM requested System dump using
'//core.20180418.075046.15710.0001.dmp' in response to an event■
JVMDUMP010I System dump written to //core.20180418.075046.15710.0001.dmp■

JVMDUMP032I JVM requested Java dump using
'//javacore.20180418.075046.15710.0002.txt' in response to an event■
IBM Java[15710]: JVMDUMP032I JVM requested Java dump using
'//javacore.20180418.075046.15710.0002.txt' in response to an event■
JVMDUMP010I Java dump written to
//javacore.20180418.075046.15710.0002.txt■
JVMDUMP032I JVM requested Snap dump using
'//Snap.20180418.075046.15710.0003.trc' in response to an event■
IBM Java[15710]: JVMDUMP032I JVM requested Snap dump using
'//Snap.20180418.075046.15710.0003.trc' in response to an event■
JVMDUMP010I Snap dump written to //Snap.20180418.075046.15710.0003.trc■

JVMDUMP007I JVM Requesting JIT dump using
'//jitdump.20180418.075046.15710.0004.dmp'■
JVMDUMP010I JIT dump written to //jitdump.20180418.075046.15710.0004.dmp■
JVMDUMP013I Processed dump event "gpf", detail "".■



Don Brown