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NB6.7.1, JDK 6, Ubuntu 9.04 I did nothing related to DB support (created C++ project) and took a random thread dump during IDE shutdown since it took too long. Interesting part shows some db explorer code trying to load classes. at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224) - locked <0x4c48db40> (a org.netbeans.StandardModule$OneModuleClassLoader) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) - locked <0x4c48db40> (a org.netbeans.StandardModule$OneModuleClassLoader) at org.netbeans.modules.db.explorer.DatabaseConnectionConvertor.importOldConnections(DatabaseConnectionConvertor.java:260) at org.netbeans.modules.db.explorer.ConnectionList.getDefault(ConnectionList.java:79) - locked <0x898f7928> (a java.lang.Class for org.netbeans.modules.db.explorer.ConnectionList) at org.netbeans.modules.db.DatabaseModule.close(DatabaseModule.java:59) at org.netbeans.core.startup.NbInstaller.close(NbInstaller.java:709) at org.netbeans.ModuleManager.shutDown(ModuleManager.java:1585) at org.netbeans.core.startup.ModuleSystem.shutDown(ModuleSystem.java:291) at org.netbeans.core.NbTopManager.doExit(NbTopManager.java:514)
I'll fix it.
The most problematic places were fixed by 95b5c14239a4 and 54dbf7d8c612.
Integrated into 'main-golden', will be available in build *200909181401* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-golden/rev/54dbf7d8c612 User: Jiri Rechtacek <jrechtacek@netbeans.org> Log: #171670: DB explorer kicks in during IDE shutdown.