WARNING: Could not lock System prefs.Unix error code 0.

Products

• CA Release Automation - Release Operations Center (Nolio)
• CA Release Automation - DataManagement Server (Nolio)

Issue/Introduction

While trying to install the Release Automation Agent on AIX it returns the following error messages:

Nov, 16, 2017 2:56:18 PM java.util.prefs.FileSystemPreferences checkLockFile0ErrorCode

WARNING: Could not lock System prefs.Unix error code 0.

Nov, 16, 2017 2:56:18 PM java.util.prefs.FileSystemPreferences syncWorld

WARNING: Couldn't flush system prefs: java.util.prefs.BackingStoreException: Couldn't get file lock.

 

The terminal would still give its normal prompts for the installer with these types of messages periodically showing up. 

Environment

Release Automation Agent 6.3

Cause

The cause is related to a files in a directory (a $HOME/.java/.userPrefs) that seem to be conflicting with files that are trying to be used during the installation. 

Resolution

These steps were used to successfully install the agent without these messages appearing:

1. mkdir -p $HOME/.java2/.systemPrefs
2. mkdir -p $HOME/.java2/.userPrefs 
3. chmod -R 755 ~/.java2
4. export JAVA_OPTS="-Djava.util.prefs.systemRoot=$HOME/.java2 -Djava.util.prefs.userRoot=$HOME/.java2/.userPrefs"
5. export _JAVA_OPTS="-Djava.util.prefs.systemRoot=$HOME/.java2 -Djava.util.prefs.userRoot=$HOME/.java2/.userPrefs"
6. export INSTALL4J_ADD_VM_PARAMS="-Djava.util.prefs.systemRoot=$HOME/.java2 -Djava.util.prefs.userRoot=$HOME/.java2/.userPrefs"
7. ./nolio_agent_aix_6_3_0_b9622.sh

Note: $HOME was used exactly as is in steps 1 and 2. In steps 4-6 we replaced $HOME with the absolute directory path that $HOME evaluates to. Ex: /home/myusername