Problem did not exist in V7. I thought PL/SQL Dev was multi threaded but I may go back to V7 now

Can you let me know the exact symptoms?

[quote=Marco Kalter]Can you let me know the exact symptoms? [/quote]

I open an SQL file click F8 to run, then open another window/file and do the same. The PL/SQL Title Bar then displays (Not Responding) I cannot tab between the two windows and the timer stops incrementing.

Therefore, I don't know if the script is still running or if I should abort the program and start again. Wherupon I am likely to meet the same scenario.

Any help is appreciated.

Can you let me know the "Session Mode" preference (Tools > Preferences > Oracle / Connection)?

[quote=Marco Kalter]Can you let me know the "Session Mode" preference (Tools > Preferences > Oracle / Connection)? [/quote]

Session Mode > Multi Session
Allow Mutiple Connections > Checked

However, it does actually return. 1 script took 1172:05 but has produced results and window is now responding!

Is there a limit as to the number of scripts you can run or amount resource you can use?

There is no limit. To obtain some more diagnostic information, can you modify the shortcut and add the DebugSQL parameter? For example:

"C:\Program Files\PLSQL Developer\plsqldev.exe" DebugSQL

Reproduce the problem and send me the debug.txt file that is generated in the PL/SQL Developer directory or in the %APPDATA%\PLSQL Developer directory (e.g. C:\Users\<User>\AppData\Roaming\PLSQL Developer).