When opening a large number of editors in the Studio, a "no more handles" error may be returned because you hit the maximum number of user handles that can be opened in a Windows session. At that point, you cannot open other editors.
This article provides you with best practices to prevent this error from occurring and a workaround to increase user handle and GDI handle limits on Windows.
Any version of Talend Studio installed on Windows operating systems.
As opening editors uses handles, when you open a large number of editors in the Studio, you may hit the maximum handles limit on Windows operating systems and get a "no more handles" error like this:
!ENTRY org.eclipse.ui 4 0 2016-12-13 10:38:23.372 !MESSAGE Unhandled event loop exception !STACK 0 org.eclipse.swt.SWTError: No more handles at org.eclipse.swt.SWT.error(SWT.java:4467) at org.eclipse.swt.SWT.error(SWT.java:4356) at org.eclipse.swt.SWT.error(SWT.java:4327) ...
You can prevent the "no more handles" error from occurring by closing editors you do not use.
If you get a "no more handles" error because you opened a large number of editors, save your work and restart the Studio.
A possible workaround would be increasing user handle and GDI handle limits. For further information, see: Increasing User Handle and GDI Handle Limits .