This seems to be a cause or regression of CONF-22469.

Scenario #1

1. Create a new LDAP User Directory.
2. Leave "Default Group Memberships" field empty
3. Test and save.
4. Edit the User Directory, add any group in "Default Group Memberships". For example, confluence-users
5. Test and save and bam! You'll get System Error page instead. This error is thrown in the log:

   2012-02-03 16:44:15,489 INFO [http-8414-2] [crowd.embedded.admin.ConfigurationController] doInTransaction User directory updated: [ Active Directory server ], type: [ CONNECTOR ]
   2012-02-03 16:44:15,608 ERROR [http-8414-2] [sf.hibernate.util.JDBCExceptionReporter] logExceptions ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated
   
    -- referer: http://localhost:8414/plugins/servlet/embedded-crowd/configure/ldap/ | url: /plugins/servlet/embedded-crowd/configure/ldap/ | userName: adminconf
   2012-02-03 16:44:15,610 ERROR [http-8414-2] [sf.hibernate.impl.SessionImpl] execute Could not synchronize database state with session
    -- referer: http://localhost:8414/plugins/servlet/embedded-crowd/configure/ldap/ | url: /plugins/servlet/embedded-crowd/configure/ldap/ | userName: adminconf
   2012-02-03 16:44:15,616 ERROR [http-8414-2] [atlassian.plugin.servlet.ServletModuleContainerServlet] service Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: Hibernate operation: could not insert collection rows: [com.atlassian.crowd.model.directory.DirectoryImpl.attributes#360450]; SQL []; ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated
   ; nested exception is java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated
   
    -- referer: http://localhost:8414/plugins/servlet/embedded-crowd/configure/ldap/ | url: /plugins/servlet/embedded-crowd/configure/ldap/ | userName: adminconf
   org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: Hibernate operation: could not insert collection rows: [com.atlassian.crowd.model.directory.DirectoryImpl.attributes#360450]; SQL []; ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated
   ; nested exception is java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated
   
   	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:583)
   	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
   	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
   	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   	at com.atlassian.plugin.servlet.DelegatingPluginServlet.service(DelegatingPluginServlet.java:42)
   	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   	at com.atlassian.plugin.servlet.ServletModuleContainerServlet.service(ServletModuleContainerServlet.java:52)
   	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
   	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
   	at com.atlassian.applinks.core.rest.context.ContextFilter.doFilter(ContextFilter.java:25)
   	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
   	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
   	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
   	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.security.websudo.MessagesDecoratorFilter.doFilter(MessagesDecoratorFilter.java:59)
   	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)
   	at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
   	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
   	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:40)
   	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:211)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.security.auth.trustedapps.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:98)
   	at com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:30)
   	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:150)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
   	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
   	at com.atlassian.oauth.serviceprovider.internal.servlet.OAuthFilter.doFilter(OAuthFilter.java:71)
   	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
   	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
   	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
   	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:37)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.johnson.filters.AbstractJohnsonFilter.doFilter(AbstractJohnsonFilter.java:72)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at org.springframework.orm.hibernate.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:170)
   	at com.atlassian.spring.filter.FlushingSpringSessionInViewFilter.doFilterInternal(FlushingSpringSessionInViewFilter.java:29)
   	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.util.ConfluenceErrorFilter.doFilter(ConfluenceErrorFilter.java:22)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:99)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.core.datetime.RequestTimeThreadLocalFilter.doFilter(RequestTimeThreadLocalFilter.java:35)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.gzipfilter.GzipFilter.doFilterInternal(GzipFilter.java:80)
   	at com.atlassian.gzipfilter.GzipFilter.doFilter(GzipFilter.java:51)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:33)
   	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
   	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
   	at com.atlassian.confluence.extra.webdav.servlet.filter.ReverseProxyFilter.doFilter(ReverseProxyFilter.java:427)
   	at com.atlassian.confluence.extra.webdav.servlet.filter.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:34)
   	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
   	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
   	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
   	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter.doFilter(RequestParamValidationFilter.java:58)
   	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.web.filter.TranslationModeFilter.doFilter(TranslationModeFilter.java:43)
   	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.plugin.servlet.filter.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:71)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.web.filter.LanguageExtractionFilter.doFilter(LanguageExtractionFilter.java:54)
   	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.util.RequestCacheThreadLocalFilter.doFilter(RequestCacheThreadLocalFilter.java:25)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.core.filters.encoding.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:41)
   	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:44)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter.doFilter(FourOhFourErrorLoggingFilter.java:65)
   	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
   	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
   	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
   	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
   	at java.lang.Thread.run(Thread.java:662)
   Caused by: org.springframework.dao.DataIntegrityViolationException: Hibernate operation: could not insert collection rows: [com.atlassian.crowd.model.directory.DirectoryImpl.attributes#360450]; SQL []; ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated
   ; nested exception is java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated
   
   	at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:100)
   	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
   	at org.springframework.orm.hibernate.HibernateTransactionManager.convertJdbcAccessException(HibernateTransactionManager.java:619)
   	at org.springframework.orm.hibernate.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:605)
   	at org.springframework.orm.hibernate.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:518)
   	at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:732)
   	at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:701)
   	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140)
   	at com.atlassian.sal.spring.component.SpringHostContextAccessor.doInTransaction(SpringHostContextAccessor.java:82)
   	at sun.reflect.GeneratedMethodAccessor116.invoke(Unknown Source)
   	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   	at java.lang.reflect.Method.invoke(Method.java:597)
   	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)
   	at $Proxy254.doInTransaction(Unknown Source)
   	at sun.reflect.GeneratedMethodAccessor116.invoke(Unknown Source)
   	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   	at java.lang.reflect.Method.invoke(Method.java:597)
   	at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154)
   	at $Proxy254.doInTransaction(Unknown Source)
   	at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21)
   	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   	at java.lang.reflect.Method.invoke(Method.java:597)
   	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
   	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
   	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
   	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
   	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
   	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
   	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
   	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
   	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
   	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
   	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
   	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
   	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
   	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
   	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
   	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
   	at $Proxy403.execute(Unknown Source)
   	at com.atlassian.crowd.embedded.admin.ConfigurationController.saveDirectory(ConfigurationController.java:165)
   	at com.atlassian.crowd.embedded.admin.ConfigurationController.onSubmit(ConfigurationController.java:75)
   	at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:267)
   	at org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:265)
   	at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
   	at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
   	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
   	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
   	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
   	... 131 more
   Caused by: java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated
   
   	at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:440)
   	at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:396)
   	at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:837)
   	at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:445)
   	at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:191)
   	at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:523)
   	at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:207)
   	at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1010)
   	at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1315)
   	at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3576)
   	at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3657)
   	at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1350)
   	at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105)
   	at net.sf.hibernate.impl.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:22)
   	at net.sf.hibernate.collection.AbstractCollectionPersister.insertRows(AbstractCollectionPersister.java:610)
   	at net.sf.hibernate.impl.ScheduledCollectionUpdate.execute(ScheduledCollectionUpdate.java:49)
   	at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2447)
   	at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2433)
   	at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2393)
   	at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2259)
   	at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61)
   	at org.springframework.orm.hibernate.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:510)
   	... 176 more
   2012-02-03 16:44:15,889 INFO [http-8414-2] [atlassian.confluence.status.SystemErrorInformationLogger] writeToLog 
   Request Unique ID : 829488b3-5d78-42a2-8359-6ac171f7fa94
   --------------------------
   JVM Stats
   --------------------------
   allocatedHeap = 380895232
   availablePermGen = 110690232
   usedMemory = 255053560
   totalMemory = 380895232
   freeMemory = 125841672
   maxPermGen = 268435456
   usedPermGen = 157745224
   freeMemoryInMegabytes = 120
   freeAllocatedHeap = 125841672
   availableHeap = 222179592
   usedMemoryInMegabytes = 243
   maxHeap = 477233152
   usedHeap = 255053560
   totalMemoryInMegabytes = 363
   --------------------------
   Request Information
   --------------------------
   URL: http://localhost:8414/500page.jsp
   Scheme: http
   Server: localhost
   Port: 8414
   URI: /500page.jsp
   Context Path: 
   Servlet Path: /500page.jsp
   Path Info: null
   Query String: null
   --------------------------
   Attributes
   --------------------------
   javax.servlet.forward.request_uri: /plugins/servlet/embedded-crowd/configure/ldap/
   javax.servlet.forward.context_path: 
   javax.servlet.forward.servlet_path: /plugins/servlet
   javax.servlet.forward.path_info: /500page.jsp
   os_securityfilter_already_filtered: true
   com.atlassian.seraph.auth.LoginReason: OK
   com.atlassian.confluence.security.websudo.MessagesDecoratorFilter__already_filtered__: true
   org.springframework.web.servlet.DispatcherServlet.THEME_SOURCE: ECWebApplicationContext: display name [Root WebApplicationContext]; startup date [Fri Feb 03 16:05:08 MYT 2012]; parent: org.springframework.osgi.atlassian.NonValidatingOsgiBundleXmlApplicationContext@7bfa88e6
   atlassian.core.seraph.original.url: /plugins/servlet/embedded-crowd/configure/ldap/
   org.springframework.web.servlet.DispatcherServlet.THEME_RESOLVER: org.springframework.web.servlet.theme.FixedThemeResolver@300073e4
   org.springframework.web.servlet.DispatcherServlet.CONTEXT: ECWebApplicationContext: display name [Root WebApplicationContext]; startup date [Fri Feb 03 16:05:08 MYT 2012]; parent: org.springframework.osgi.atlassian.NonValidatingOsgiBundleXmlApplicationContext@7bfa88e6
   javax.servlet.error.status_code: 500
   javax.servlet.error.servlet_name: servlet-module-container-servlet
   com.opensymphony.sitemesh.USINGSTREAM: false
   org.springframework.web.servlet.HandlerMapping.pathWithinHandlerMapping: 
   com.atlassian.gzipfilter.GzipFilter_already_filtered: true
   loginfilter.already.filtered: true
   com.atlassian.confluence.web.ConfluenceJohnsonFilter_already_filtered: true
   Confluence-Request-Time: 1328258655473
   javax.servlet.error.message: Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: Hibernate operation: could not insert collection rows: [com.atlassian.crowd.model.directory.DirectoryImpl.attributes#360450]; SQL []; ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated ; nested exception is java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (CONF414HALATASLOCAL.SYS_C0016900) violated 
   com.opensymphony.sitemesh.APPLIED_ONCE: true
   confluence.websudo.request: true
   com.atlassian.core.filters.HeaderSanitisingFilter_already_filtered: true
   confluence.messages: {websudo-message=com.atlassian.confluence.security.websudo.WebSudoMessage@6db8965a}
   __cleanup_recursion_counter: 0
   com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter_already_filtered: true
   javax.servlet.error.request_uri: /plugins/servlet/embedded-crowd/configure/ldap/
   org.springframework.web.servlet.DispatcherServlet.LOCALE_RESOLVER: org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver@719726fc
   --------------------------
   Parameters
   --------------------------
   port : 389
   ldapUserPassword : unicodePwd
   ldapUserdn : CN=admin admin,CN=Users,dc=customware,dc=internal
   ldapUserFilter : (&(objectCategory=Person)(sAMAccountName=*))
   save : Save
   _nestedGroupsEnabled : visible
   ldapSearchTimelimitInSec : 60
   _ldapUsermembershipUse : visible
   _ldapReferral : visible
   ldapConnectionTimeoutInSec : 10
   ldapGroupUsernames : member
   ldapUserObjectclass : user
   directoryId : 360450
   ldapUserUsername : sAMAccountName
   ldapGroupName : cn
   type : com.atlassian.crowd.directory.MicrosoftActiveDirectory
   ldapUserFirstname : givenName
   _useSSL : visible
   crowdSyncIncrementalEnabled : true
   _ldapRelaxedDnStandardisation : visible
   name : Active Directory server
   ldapUserDn : 
   ldapCacheSynchroniseIntervalInMin : 60
   ldapAutoAddGroups : confluence-users
   ldapPagedresultsSize : 1000
   atl_token : 7397e6bfaeafe4daf995d640c66d91028504f9a0
   ldapPagedresults : true
   hostname : 10.60.1.186
   _crowdSyncIncrementalEnabled : visible
   ldapPassword : admin
   ldapBasedn : dc=customware,dc=internal
   ldapUserUsernameRdn : cn
   ldapUserDisplayname : displayName
   ldapGroupDn : 
   ldapUserEncryption : sha
   ldapReadTimeoutInSec : 120
   ldapUserLastname : sn
   ldapPermissionOption : READ_ONLY_LOCAL_GROUPS
   _ldapUsermembershipUseForGroups : visible
   ldapGroupObjectclass : group
   ldapRelaxedDnStandardisation : true
   ldapGroupDescription : description
   ldapUserEmail : mail
   newForm : true
   ldapGroupFilter : (objectCategory=Group)
   ldapReferral : true
   ldapUserGroup : memberOf
   _ldapPagedresults : visible
   

Scenario #2

1. Create a new LDAP User Directory.
2. Ensure to fill something in "Default Group Memberships"
3. Test and Save. User Directory will be created successfully.
4. One won't be able to edit the User Directory at all once there is a value in "Default Group Memberships" which is very similar to CONF-22469.
5. The error thrown is the same as scenario #1

Workaround:

Please backup your Confluence database first.

For scenario #1:

1. Login with internal admin account
2. Remove the LDAP User Directory
3. Recreate from scratch with the same settings and ensure that you've filled the "Default Group Memberships" with the desired local groups accordingly.

For scenario #2

You will need to modify any changes manually in the database. The settings are all stored in the cwd_directory_attribute.conne