warning about MaxPermSize option not supported in Java 8

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Article ID: KB0074662

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Updated On:

Products	Versions
TIBCO BPM Enterprise (formerly TIBCO ActiveMatrix BPM)	4.0, 4.1, 4.2

Description

BPM Installation Guides say that an AMX/BPM 4.x system must be configured to use a Java 8 JRE (Ref:1,2,3)

Default configuration files for TCT and AMX/BPM nodes include some options not supported by Oracle Java 8 JVM
For nodes, this means the JVM logs a warning message to the node log file during startup.
The warning is more obvious when launching TCT in console mode:


Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=512m; support was removed in 8.0

Environment

Any currently supported AMX/BPM version. Oracle Java 8 JRE (any OS/build)

Resolution

As the message states, the JVM ignores the unsupported option. Likewise, you can safely ignore the warning message.

To avoid/prevent the warning message, you need to remove the unsupported option from the JVM arguments.

For runtime nodes, use the AMX Administrator UI:

Infrastructure > Nodes
select BPM Node
go to the Configuration tab
click link for JVM Configuration
in the General Args field, locate and delete any unsupported JVM options mentioned in the logs. Note: JVM options are typically prefixed -X or -XX (prefix may not be shown in the warning message)

For TCT, you must edit the .ini file directly: TIBCO_HOME/tct/1.4/TIBCOConfigurationTool.ini
You may find the unsupported option specified twice here, in different formats:

…
--launcher.XXMaxPermSize
256m
…
-XX:MaxPermSize=256m
…

Note: arguments of JVM options for the launcher are given on separate lines. Be sure to remove the argument as well as the option.
Delete both options, then save the file.