Eclipse JPA Project Change Event Handler waiting

Question

Why am I getting   JPA Project Change Event Handler  waiting    whenever I try to build my project   I have some JPA projects in my workspace and It takes lot of time to build my project  It also leads to GC over limit with 6GB of heap space allocated to eclipse  I m currently using Kepler  This issue did not occur in Helios   There are some BugZilla entries for the above bug  but I can see them fixed  But not available in 4 3 1   Any solutions workarounds for the above issue   Thanks

User · Answer

I have disabled  unchecked  the JPA validator   Now whenever I save the file  it shows only one task for JPA Project Change Event Handler and only 2 or 3 for JPA Java Change Event Handler   And most important  the UI Hang issue is resolved   Please refer following screen shot for the setting I have made

User · Answer

Don t know why  my Neon Eclipse still having this issue  it doesn t seem to be fixed in Mars version as many people said   I found that using command is too troublesome  I delete the plugin away via the Eclipse Installation Manager        Neon   Help   Installation Details   Installed Software       Oxygen   Preferences   Install Update   Installed Software   Just select the plugin  Dali Java Persistence Tools -JPA Support  and click  uninstall  will do  Please take note my screen below doesn t have that because I already uninstalled

User · Answer

The issue seems to be resolved with the new Eclipse  The plugin isn t available with Java Enterprise suite

User · Answer

minor correction to mwhs s answer for the windows portion     The move command does not work for the   features folder because    well  frankly because Windows is retarded  you can use wildcards with  move  on files  but apparently wildcards   folders    ignore the command   Anyway  this should work as an alternative to the windows snippet provided for step  2 in his answer   as a batch file    echo off set eclipse dir C  eclipse luna  mkdir disabled mkdir disabled features  mkdir disabled plugins  move plugins org eclipse jpt   disabled plugins for  f   i in   dir   eclipse dir  features org eclipse jpt     ad  b   do       move   eclipse dir  features   i    eclipse dir  disabled features   i

User · Answer

I still have the same issue in Neon 2 My solution is to disable the JPA Configurator   Open the Eclipse Preferences  not the project prefs    Go to Maven --  Java EE Integration and disable the JPA Configurator  I also disabled the JAX-RS Configurator and the JSF Configurator    From that point on the JPA Project Change Event Handler doesn t show up anymore   Restart Eclipse if the change does not take effect immediately

User · Answer

The solution for eclipse photon seems to be    open   eclipse configuration org eclipse equinox simpleconfigurator bundles info delete the lines starting with org eclipse jpt  might work to only remove org eclipse jpt jpa

User · Answer

Also  if you cannot find your eclipse dir  Because  I had such problem on mac we can remember that eclipse is using OSGi  so we can go to Target Platform and disable features plugins that were described above  org eclipse jpt

User · Answer

I had the same problem and I ended up finding out that this seems to be a known bug in DALI   Eclipse Java Persistence Tools  since at least eclipse 3 8 which could cause the save action in the java editor to be extremly slow   Since this hasn t been fully resolved in Kepler  20130614-0229  yet and because I don t need JPT DALI in my eclipse I ended up manually removing the org eclipse jpt features and plugins   What I did was   1   exit eclipse  2   go to my eclipse install directory   cd eclipse   and execute these steps    nix   mkdir disabled mkdir disabled features disabled plugins  mv plugins org eclipse jpt   disabled plugins mv features org eclipse jpt   disabled features   windows   mkdir disabled mkdir disabled features  mkdir disabled plugins  move plugins org eclipse jpt   disabled plugins for  D  R  D in  features org eclipse jpt    do move  D disabled features   3   Restart eclipse    After startup and on first use eclipse may warn you that you need to reconfigure your content-assist  Do this in your preferences dialog   Done   After uninstalling DALI JPT my eclipse feels good again  No more blocked UI and waiting for seconds when saving a file

User · Answer

There is another way to disable JPA tools for the project  that doesn t require to uninstall JPA features plug-ins  I tested on https   github com Jasig uPortal project wich was mentioned in https   bugs eclipse org bugs show bug cgi id 386171 and claims to have similar problems     Switch to Eclipse Projects Explorer View to see the projects with JPA Facet Enabled  there should be  JPA Content  node   Select the project of interest which has  JPA Content  node and select Properties from context menu or press Alt Enter to show Properties dialog for the project  Select  Project Facets  node in tree with categories  Clear JPA check box in project facets list and press OK    After disabling JPA facet for uportal-war project form repository above I don t see any JPA related jobs in Eclipse Progress View

[eclipse] Eclipse JPA Project Change Event Handler (waiting)

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