Could Not Lock System Prefs.unix Error Code 10922
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This Site Careers Other all forums Forum: Developer Certification (OCMJD) JDK1.4 Could not lock System prefs David Chan Ranch Hand Posts: 30 posted 12 years ago My java program work fine in PC. Then, when I try
Couldn't Flush User Prefs: Java.util.prefs.backingstoreexception: Couldn't Get File Lock.
to move it to Unix platform (JDK version: 1.4.0_02) and test the compatibility, it could not lock user prefs. unix error code 24. can work properly but shows following error message: Jan 14, 2004 11:28:50 PM java.util.prefs.FileSystemPreferences$2 run WARNING: Could not create system preferences
Warning: Could Not Lock System Prefs. Unix Error Code 7.
directory. System preferences are unusable. Jan 14, 2004 11:28:58 AM java.util.prefs.FileSystemPreferences checkLockFile0ErrorCode WARNING: Could not lock System prefs.Unix error code 2334152. Jan 14, 2004 11:28:58 AM java.util.prefs.FileSystemPreferences syncWorld WARNING: Couldn't flush system prefs: java.util.prefs.BackingStoreException: warning: could not lock system prefs. unix error code 0. Couldn't get file lock. Jan 14, 2004 11:29:28 AM java.util.prefs.FileSystemPreferences checkLockFile0ErrorCode WARNING: Could not lock System prefs.Unix error code 2334152. Jan 14, 2004 11:29:28 AM java.util.prefs.FileSystemPreferences syncWorld WARNING: Couldn't flush system prefs: java.util.prefs.BackingStoreException: Couldn't get file lock. I have solved the problem by creating the missing directories and files under /etc: Directory: /etc/.java/.systemPrefs drwxr-xr-x 2 root other 512 Jan 14 12:26 . drwxr-xr-x 3 root other 512 Jan 14 could not create system preferences directory. system preferences are unusable. 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. Can someone explain what purpose of above 2 files? 2. What APIs are they related to? 3. Should I document this in the installation note? Thank you David Mark Spritzler ranger Sheriff Posts: 17278 6 I like... posted 12 years ago My question is why your code is trying to access System file properties anyway. I don't remember any requirements in the assignment asking for this feature. What code is causing these errors? I'd probably remove them from your code. The assignment is designed so you don't have to access OS files like that, so that you can simply move your application from one OS to another without any issues to deal with. 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 bug!!! I have tried to remove /etc/.java directory and run the test program. import javax.swing.JFrame; public class Test { public static void main(String[] args) { new JFrame().show(); } } It will appear the error message if run by JDK1.4, b
Could not lock User prefs Websphere; startup; FileSystemPreferences; user prefs; prefs; Could not lock User prefs Technote (troubleshooting) Problem(Abstract) Warning message issued during the non-root or root
Warning: Couldn't Create User Preferences Directory. User Preferences Are Unusable.
startup of WebSphere stating that it can not lock the user or system /etc/.java/.systemprefs/com create failed preferences. Symptom The following message can be seen in the systemout.log: [9/11/11 18:03:19:921 EDT] 00000001 prefs W java.util.prefs.FileSystemPreferences syncWorld Couldn't
Checklockfile0errorcode
flush user prefs: java.util.prefs.BackingStoreException: Couldn't get file lock. [9/11/11 18:03:49:929 EDT] 00000001 prefs W java.util.prefs.FileSystemPreferences checkLockFile0ErrorCode Could not lock User prefs. Unix error code 2. Cause The non-root ID that is being used https://coderanch.com/t/184903/java-developer-OCMJD/certification/JDK-lock-System-prefs to start WebSphere Application Server does not have a user_home directory. Therefore this non-root ID is unable to access the root user's "/etc/.java/.systemPrefs". This produces the aforementioned warning messages every 30 seconds in the profile_root/logs/server_name/systemout.log. The root ID used to start Websphere Application Server can not find the Java system pref file. Diagnosing the problem For non-root, you can confirm this issue by trying to http://www-01.ibm.com/support/docview.wss?uid=swg21515420 start WebSphere using the "root" ID. Review the Websphere_Home/profiles/
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