Fix Warning Could Not Lock System Prefs. Unix Error Code 2 (Solved)

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Warning Could Not Lock System Prefs. Unix Error Code 2

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I also think this. Mark Perfect World Programming, LLC - iOS Apps How to Ask Questions the Smart Way FAQ David Chan Ranch Hand Posts: 30 posted 12 years ago This is a JDK Apparently, it is the preferences code within the Java runtime library that breaks if this directory does not exist. Jul 17, 2002 9:42:56 AM java.util.prefs.FileSystemPreferences syncWorld WARNING: Couldn't flush system prefs: java.util.prefs.BackingStoreException: Couldn't get file lock. ... Source

When I type java -jar runme.jar, show the following error message: Exception in thread "main" java.lang.UnsatisfiedLinkError: /opt/j2sdk1.4.2_03/jre/lib/sparc/motif12/libmawt.so : ld.so.1: java: fatal: libXm.so.4: open failed: No such file or directory at java.lang.ClassLoader$NativeLibrary.load(Native If you successfully loaded the applet before, erase the relevant files in ~/.java and ~/.icedtea (it is easier to erase both directories completely). 2. To prevent this hard-to-diagnose problem on an important use case, this empty directory should be created by default. Onlyadministrators of the AppDynamics Controller are expected to know thedatabase root user's password.

Couldn't Flush User Prefs: Java.util.prefs.backingstoreexception: Couldn't Get File Lock.

It just seemed like a nice idea, so applets could have their own preferences stored somewhere instead of reusing the user or root ones. In a company crossing multiple timezones, is it rude to send a co-worker a work email in the middle of the night? This produces the aforementioned warning messages every 30 seconds in the profile_root/logs/server_name/systemout.log. Java's looking for /etc/.java/.systemPrefs/.system.lock and /etc/.java/.systemPrefs/.systemRootModFile Manually creating the above files (use "touch" to create empty files) and their containing directories should fix.

Click Save to save your changes. drwxr-xr-x 3 root other 512 Jan 14 12:26 .. -rw-r--r-- 1 root other 0 Jan 14 12:26 .system.lock -rw-r--r-- 1 root other 0 Jan 14 12:26 .systemRootModFile 1. Cause The non-root ID that is being used to start WebSphere Application Server does not have a user_home directory. Could Not Create System Preferences Directory. System Preferences Are Unusable. My expectation is that I shouldn't need file locks when I am accessing files from only a single application/process.

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The reason it requires file locks is that it is designed for concurrent access by multiple processes. Warning: Couldn't Create User Preferences Directory. User Preferences Are Unusable. It should deal > with null system preferences. If a reviewer makes significant contributions to improving a paper, may he/she suggest becoming a coauthor? If I were running it in a clustered configuration, or had other apps/processes writing to it, then yes I would agree that file locks could be useful.

Could Not Lock User Prefs. Unix Error Code 24.

It is likely caused because the underlying FS (NFS) does not support file-level locking. But I am not root, getting someone to run root is expensive and I have multiple users running jvms, does that mean i have to create those files and set up Couldn't Flush User Prefs: Java.util.prefs.backingstoreexception: Couldn't Get File Lock. Perhaps what you need is a user management mechanism? Could Not Lock System Prefs. Unix Error Code 0 Dec 14, 2011 9:29:21 AM java.util.prefs.FileSystemPreferences checkLockFile0ErrorCode WARNING: Could not lock User prefs.

Add "-Djava.util.prefs.userRoot=/home/wasadmin/preps" as a SDK generic jvm argument To set the argument on the SDK: In the administrative console, click Servers > Server Types > WebSphere application servers , and select Problem The following appears in theatlassian-confluence.log about every 2 milliseconds: 2014-09-28 13:24:33,960 WARN [Timer-10] [java.util.prefs] syncWorld Couldn't flush user prefs: java.util.prefs.BackingStoreException: Couldn't get file lock. -- referer: https://my.site.com | url: /display/SPACE/my+wiki It wasn't accurate It wasn't clear It wasn't relevant Submit feedback Cancel Have a question about this article? But I cannot guarantee that whatever we choose will not require file locks. Warning: Could Not Lock System Prefs. Unix Error Code 7.

Try giving 755 permission for /home/wasadmin/.java/.userPrefs 2. It should deal with null system preferences. drwxr-xr-x 3 root root 4096 2011-01-13 15:46 .. -rw-r--r-- 1 root root 0 2011-01-13 15:46 .system.lock -rw-r--r-- 1 root root 0 2011-01-13 15:46 .systemRootModFile So, it has hidden files within the See questions about this article Powered by Confluence and Scroll Viewport Atlassian Support Ask the community Provide product feedback Contact technical support Atlassian Privacy Policy Terms of use Security Copyright ©

When does Depala's ability happen? Checklockfile0errorcode Thank you, The Sonatype Support Team Hide Permalink David Erickson added a comment - 08/20/13 09:50 PM I suspect this is still a problem for those who are running on mounts System preferences are unusable. 2.

May 30, 2014 1:16:55 PM java.util.prefs.FileSystemPreferences syncWorld WARNING: Couldn't flush system prefs: java.util.prefs.BackingStoreException: Couldn't get file lock.

REPRODUCIBILITY : This bug can be reproduced always. ---------- BEGIN SOURCE ---------- import javax.swing.JDialog; class Test { public static void main(String[] params) throws Exception { final JDialog dlg = new JDialog(); That said, we are not entirely happy with the Java preferences API, and will likely change to using something else at some point. BUt the workaround needs to be done in code. Could Not Lock System Prefs. Unix Error Code 6 Start any Java Swing application that runs for a while (e.g.

It wasn't accurate It wasn't clear It wasn't relevant Submit feedback Cancel Have a question about this article? http://docs.oracle.com/javase/7/docs/api/java/util/prefs/Preferences.html People Assignee: Unassigned Reporter: David Erickson Last Updated By: Rich Seddon Votes: 3 Vote for this issue Watchers: 8 Start watching this issue Dates Created: 07/27/10 02:28 AM Updated: 09/03/13 If you have an update, please use the "Add Comment" action to let us know. Running application under normal (non-root) user identity.

Linked 1 Java - Setting Preferences backingstore directory 0 java permission error on first run of newly installed Neo4J server 0 How to deploy Vaadin to OpenShift? It is possible for a plugin to use the preferences module, which defaults to write to ~/.confluence/ Resolution Create the confluence user home directory. I don't know enough about the whole GNU/Linux libc/libstdc++ insanity to work out whether this is the actual problem, rather then a bug in AWT. Sounds easy, no?

I did some digging/reading and deduced the following: An administrator with root access must create the system preferences directory /etc/.java/.systemPrefs with drwxr-xr-x access. Update it with: # su -c 'yum update --enablerepo=updates-testing java-1.6.0-openjdk-1.6.0.0-61.1.10.4.fc15' as soon as you are able to. Do this: mkdir -p ~/.java/.systemPrefs mkdir ~/.java/.userPrefs chmod -R 755 ~/.java export JAVA_OPTS="-Djava.util.prefs.systemRoot=/home/user/.java Djava.util.prefs.userRoot=/home/user/.java/.userPrefs" ***Note: first mkdir is very important, without it java will default to /etc/… Inspiration: Java How to NOT render a part of a document Why cast an A-lister for Groot?

Hide Permalink David Erickson added a comment - 08/20/13 10:31 PM Ah, I hadn't seen other errors in the log so I assumed there were no other file locking problems. Binary Convolution What is the origin of the word "pilko"? posted 12 years ago Hi David, Perhaps you should upgrade to a later version of the JDK? jvm 1 | 2010-07-26 19:23:49 WARN [Timer-1 ] - java.util.prefs - Couldn't flush user prefs: java.util.prefs.BackingStoreException: Couldn't get file lock.