July 31, 2017

Set or change default editor for JSP in Eclipse IDE

Problem : I want to set JSP Editor as a default editor in Eclipse IDE.

Solution : Follow below steps to change default editor to open JSP files in Eclipse IDE.

Step 1 : Start Eclipse IDE, click on Window then Preferences.
Step 2: In the pop-up window, click on "File Associations" inside "Editors" then click on *.jsp in "File types".

Step 3: After that you can see "Associated editors" as shown in below screenshot. Just select JSP Editor and click on Default button and OK button.

July 29, 2017

Error : Unable to acquire the state change lock for the module

Problem : Getting following error when starting eclipse IDE.

org.osgi.framework.BundleException: Unable to acquire the state change lock for the module: osgi.identity; osgi.identity="org.eclipse.core.runtime"; type="osgi.bundle"; version:Version="3.10.0.v20140318-2214"; singleton:="true" [id=83] STARTED [STARTED]
at org.eclipse.osgi.container.Module.lockStateChange(Module.java:329)
at org.eclipse.osgi.container.Module.start(Module.java:389)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1582)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1562)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1533)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1476)
at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)

Solution : Go to your eclipse IDE directory. Delete the lock files whose names starting with .fileTable from following location:
Now restart the eclipse without rebooting the system.

Error: not able to start eclipse IDE

Problem : I was starting eclipse and it said an error has occurred, see ...\workspace\.metadata\.log.
I opened the log file which had following error log.

Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:792)
at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:721)
at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:936)
at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:319)
at org.eclipse.osgi.container.Module.doStart(Module.java:571)
at org.eclipse.osgi.container.Module.start(Module.java:439)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:454)
at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)

Solution : Delete the snap file from this location  .metadata/.plugins/org.eclipse.core.resources/.snap in your eclipse workspace.

May 24, 2017

Oracle Database : System error 5 has occurred. Access is denied

Problem : I have installed Oracle 10g XE on Windows 8. When I try to start using the "Start Database" button, the command window pops up with the error :
C:\oraclexe\app\oracle\product\10.2.0\server\BIN>net start OracleXETNSListener
System error 5 has occurred.
Access is denied.
Solution : Right click on Start Database icon and Run as Administrator.


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