Specifies the size of each Java thread's execution stack. You may need
to increase the default number of bytes if you need deeply-nested call
stacks, but otherwise you should not need to change the default.
409600 (bytes, which is 400KB)
Don't set this value below 204800 (200KB) or above 819200 (800KB)
In order for changes to this setting to take effect, the JVM must be restarted.
Therefore, the Domino server needs to be restarted.
Notes/Domino Notes.ini settings
Domino Configuration Tuner:
This setting is included in the DCT
catalog of best practices.