jefflj, valeu pela dica, mas o classpath está configurado corretamente.
Vejam os últimos erros do log:
[code]!SESSION 2012-07-16 12:53:30.356 -----------------------------------------------
eclipse.buildId=M20110909-1335
java.version=1.7.0_05
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=pt_BR
Framework arguments: -startup plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar ?launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.0.v20100503 -product org.eclipse.epp.package.jee.product ?launcher.defaultAction openFile ?launcher.XXMaxPermSize ?showsplash org.eclipse.platform ?launcher.XXMaxPermSize 256m ?launcher.defaultAction openFile -vmargs -Dosgi.requiredJavaVersion=1.5 -Xms256m -Xmx512m
Command-line arguments: -os win32 -ws win32 -arch x86 -startup plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar ?launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.0.v20100503 -product org.eclipse.epp.package.jee.product ?launcher.defaultAction openFile ?launcher.XXMaxPermSize ?showsplash org.eclipse.platform ?launcher.XXMaxPermSize 256m ?launcher.defaultAction openFile -vmargs -Dosgi.requiredJavaVersion=1.5 -Xms256m -Xmx512m
!ENTRY org.eclipse.core.resources 2 10035 2012-07-16 12:53:36.313
!MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes.
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:54:17.629
!MESSAGE The POM for com.oracle:ojdbc6:jar:11.2.0.3.0 is missing, no dependency information available
!ENTRY org.eclipse.m2e.logback.appender 4 0 2012-07-16 12:54:21.454
!MESSAGE Unable to update index for central|http://repo1.maven.org/maven2
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:54:34.715
!MESSAGE The POM for com.oracle:ojdbc6:jar:11.2.0.3.0 is missing, no dependency information available
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:03.084
!MESSAGE The POM for com.oracle:ojdbc6:jar:11.2.0.3.0 is missing, no dependency information available
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:07.941
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:07.949
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:08.400
!MESSAGE The POM for com.oracle:ojdbc6:jar:11.2.0.3.0 is missing, no dependency information available
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:08.937
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:08.942
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:09.214
!MESSAGE The POM for com.oracle:ojdbc6:jar:11.2.0.3.0 is missing, no dependency information available
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:09.664
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:09.669
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:12.834
!MESSAGE The POM for com.oracle:ojdbc6:jar:11.2.0.3.0 is missing, no dependency information available
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:13.738
!MESSAGE The POM for com.oracle:ojdbc6:jar:11.2.0.3.0 is missing, no dependency information available
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:14.282
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2012-07-16 12:55:14.287
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.ui 4 0 2012-07-16 12:57:54.343
!MESSAGE Unhandled event loop exception
!ENTRY org.eclipse.osgi 4 0 2012-07-16 12:58:03.747
!MESSAGE FrameworkEvent ERROR
!ENTRY org.eclipse.osgi 4 0 2012-07-16 12:58:06.067
!MESSAGE An unexpected runtime error has occurred. The application will terminate.
[/code]
Como podem ver na última mensagem de erro, o Eclipse foi fechado automaticamente.
Galera, muito obrigado pela ajuda!