Exception moving page between spaces

I was moving a page from the MACROS space to the CONFEXT space on http://confluence.atlassian.com.

The page had one incoming link, from a comment attached to the page itself.

Here are the error details:

Cause:
Found shared references to a collection; nested exception is net.sf.hibernate.HibernateException: Found shared references to a collection

Stack Trace: [hide]

Found shared references to a collection; nested exception is net.sf.hibernate.HibernateException: Found shared references to a collection
Referer URL: http://confluence.atlassian.com/pages/movepage.action?pageId=5935

Build Information:
Uptime: 8 days, 20 hours, 40 minutes, 13 seconds
Version: 1.2.1
Build Number: 59

Server Information:
Application Server: Orion/2.0.2
Servlet Version: 2.2
Database Dialect: net.sf.hibernate.dialect.PostgreSQLDialect

Memory Information:
Total Memory: 371 MB
Free Memory: 161 MB
Used Memory: 210 MB

System Information:
System Date: Tuesday, 21 Sep 2004
System Time: 22:09:53
System Favourite Colour: Jet Black
Java Version: 1.4.2_04
Java Vendor: Sun Microsystems Inc.
JVM Version: 1.0
JVM Vendor: Sun Microsystems Inc.
JVM Implementation Version: 1.4.2_04-b05
Java Runtime: Java(TM) 2 Runtime Environment, Standard Edition
Java VM: Java HotSpot(TM) Server VM
User Name: j2ee
User Timezone: America/Chicago
Operating System: Linux 2.4.21-20.ELsmp
OS Architecture: i386

Request
Information:
URL: http://atlassian01.contegix.com:10082/500page.jsp

• Scheme: http
• Server: atlassian01.contegix.com
• Port: 10082
• URI: /500page.jsp
• - Context Path:
• - Servlet Path: /500page.jsp
• - Path Info: null
• - Query String: pageId=5935

Attributes:

• com.atlassian.confluence.setup.SpringSessionInViewFilter.sessionFactory : true
• javax.servlet.error.exception : org.springframework.orm.hibernate.HibernateSystemException: Found shared references to a collection; nested exception is net.sf.hibernate.HibernateException: Found shared references to a collection
• javax.servlet.error.message : Found shared references to a collection; nested exception is net.sf.hibernate.HibernateException: Found shared references to a collection
• os_securityfilter_already_filtered : true
• com.atlassian.johnson.filters.JohnsonFilter_already_filtered : true
• javax.servlet.error.request_uri : /pages/domovepage.action
• javax.servlet.error.status_code : 500
• os_authstatus : null
• _sitemesh_filterapplied : true
• javax.servlet.error.servlet_name : action
• webwork.valueStack : com.opensymphony.xwork.util.OgnlValueStack@1bad991
• loginfilter.already.filtered : true
• atlassian.core.seraph.original.url : /pages/domovepage.action?pageId=5935
• javax.servlet.jsp.jspException : org.springframework.orm.hibernate.HibernateSystemException: Found shared references to a collection; nested exception is net.sf.hibernate.HibernateException: Found shared references to a collection

Parameters:

• newPageTitle = Snippet Macro Library
• newSpaceKey = CONFEXT
• contentToBeRefactored = 5938
• confirm = Move
• pageId = 5935

Logging:
2 log statements generated by this request:

[ERROR] Tue Sep 21 22:09:53 CDT 2004 [com.atlassian.confluence.util.XWorkTransactionInterceptor] Invoking rollback for transaction on action '/pages/domovepage.action (MovePageAction.doMove())' due to throwable: org.springframework.orm.hibernate.HibernateSystemException: Found shared references to a collection; nested exception is net.sf.hibernate.HibernateException: Found shared references to a collection
Throwable:
org.springframework.orm.hibernate.HibernateSystemException: Found shared references to a collection; nested exception is net.sf.hibernate.HibernateException: Found shared references to a collection
net.sf.hibernate.HibernateException: Found shared references to a collection
at net.sf.hibernate.impl.SessionImpl.updateReachableCollection(SessionImpl.java:2871)
at net.sf.hibernate.impl.FlushVisitor.processCollection(FlushVisitor.java:32)
at net.sf.hibernate.impl.AbstractVisitor.processValue(AbstractVisitor.java:69)
at net.sf.hibernate.impl.AbstractVisitor.processValues(AbstractVisitor.java:36)
at net.sf.hibernate.impl.SessionImpl.flushEntity(SessionImpl.java:2588)
at net.sf.hibernate.impl.SessionImpl.flushEntities(SessionImpl.java:2454)
at net.sf.hibernate.impl.SessionImpl.flushEverything(SessionImpl.java:2256)
at net.sf.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:1801)
at net.sf.hibernate.impl.SessionImpl.getQueries(SessionImpl.java:1567)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1532)
at net.sf.hibernate.impl.QueryImpl.list(QueryImpl.java:39)
at bucket.core.persistence.hibernate.HibernateObjectDao$4.doInHibernate(HibernateObjectDao.java:317)
at org.springframework.orm.hibernate.HibernateTemplate.execute(HibernateTemplate.java:150)
at org.springframework.orm.hibernate.HibernateTemplate.executeFind(HibernateTemplate.java:170)
at bucket.core.persistence.hibernate.HibernateObjectDao.findNamedQueryStringParams(HibernateObjectDao.java:298)
at bucket.core.persistence.hibernate.HibernateObjectDao.findNamedQueryStringParams(HibernateObjectDao.java:283)
at bucket.core.persistence.hibernate.HibernateObjectDao.findNamedQueryStringParams(HibernateObjectDao.java:263)
at com.atlassian.confluence.pages.persistence.dao.hibernate.HibernatePageDao.getPage(HibernatePageDao.java:62)
[ERROR] Tue Sep 21 22:09:53 CDT 2004 [com.opensymphony.webwork.dispatcher.ServletDispatcher] Could not execute action
Throwable:
org.springframework.orm.hibernate.HibernateSystemException: Found shared references to a collection; nested exception is net.sf.hibernate.HibernateException: Found shared references to a collection
net.sf.hibernate.HibernateException: Found shared references to a collection
at net.sf.hibernate.impl.SessionImpl.updateReachableCollection(SessionImpl.java:2871)
at net.sf.hibernate.impl.FlushVisitor.processCollection(FlushVisitor.java:32)
at net.sf.hibernate.impl.AbstractVisitor.processValue(AbstractVisitor.java:69)
at net.sf.hibernate.impl.AbstractVisitor.processValues(AbstractVisitor.java:36)
at net.sf.hibernate.impl.SessionImpl.flushEntity(SessionImpl.java:2588)
at net.sf.hibernate.impl.SessionImpl.flushEntities(SessionImpl.java:2454)
at net.sf.hibernate.impl.SessionImpl.flushEverything(SessionImpl.java:2256)
at net.sf.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:1801)
at net.sf.hibernate.impl.SessionImpl.getQueries(SessionImpl.java:1567)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1532)
at net.sf.hibernate.impl.QueryImpl.list(QueryImpl.java:39)
at bucket.core.persistence.hibernate.HibernateObjectDao$4.doInHibernate(HibernateObjectDao.java:317)
at org.springframework.orm.hibernate.HibernateTemplate.execute(HibernateTemplate.java:150)
at org.springframework.orm.hibernate.HibernateTemplate.executeFind(HibernateTemplate.java:170)
at bucket.core.persistence.hibernate.HibernateObjectDao.findNamedQueryStringParams(HibernateObjectDao.java:298)
at bucket.core.persistence.hibernate.HibernateObjectDao.findNamedQueryStringParams(HibernateObjectDao.java:283)
at bucket.core.persistence.hibernate.HibernateObjectDao.findNamedQueryStringParams(HibernateObjectDao.java:263)
at com.atlassian.confluence.pages.persistence.dao.hibernate.HibernatePageDao.getPage(HibernatePageDao.java:62)
org.springframework.dao.CleanupFailureDataAccessException: Failed to flush session before close: Found shared references to a collection; nested exception is net.sf.hibernate.HibernateException: Found shared references to a collection
net.sf.hibernate.HibernateException: Found shared references to a collection
at net.sf.hibernate.impl.SessionImpl.updateReachableCollection(SessionImpl.java:2871)
at net.sf.hibernate.impl.FlushVisitor.processCollection(FlushVisitor.java:32)
at net.sf.hibernate.impl.AbstractVisitor.processValue(AbstractVisitor.java:69)
at net.sf.hibernate.impl.AbstractVisitor.processValues(AbstractVisitor.java:36)
at net.sf.hibernate.impl.SessionImpl.flushEntity(SessionImpl.java:2588)
at net.sf.hibernate.impl.SessionImpl.flushEntities(SessionImpl.java:2454)
at net.sf.hibernate.impl.SessionImpl.flushEverything(SessionImpl.java:2256)
at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2235)
at bucket.custom.FlushingSpringSessionInViewFilter.closeSession(FlushingSpringSessionInViewFilter.java:39)
at org.springframework.orm.hibernate.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:122)
at bucket.custom.FlushingSpringSessionInViewFilter.doFilterInternal(FlushingSpringSessionInViewFilter.java:30)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:73)
at com.evermind[Orion/2.0.2 (build 11157)]._ha.doFilter(.:20)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
at com.atlassian.confluence.util.error.ProfilingAndErrorFilter.doFilter(ProfilingAndErrorFilter.java:26)
at com.evermind[Orion/2.0.2 (build 11157)]._ha.doFilter(.:20)
at com.atlassian.core.filters.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:36)
at com.evermind[Orion/2.0.2 (build 11157)]._cub._pod(.:383)
at com.evermind[Orion/2.0.2 (build 11157)]._cub._bmc(.:177)
at com.evermind[Orion/2.0.2 (build 11157)]._ax._ltc(.:666)
at com.evermind[Orion/2.0.2 (build 11157)]._ax._uab(.:191)
at com.evermind[Orion/2.0.2 (build 11157)]._bf.run(.:62)