When opening a large number of editors in the studio, the "no more handles" error may be returned because you hit the maximum number of user handles that can be opened in a Windows session. Then, 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:
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: https://weblogs.asp.net/mikedopp/increasing-user-h