Looping screen spaces
To protect against the possibility of a looping condition
due to an improper sequence of .FGO screens, OMEGAMON® for IMS limits the number of consecutive
fetches that are allowed.
By default, OMEGAMON for IMS limits
the number of consecutive .FGO screens to 64. After OMEGAMON for IMS reaches the limit, it treats
subsequent .FGO commands as if they are .SGO commands
so that executing screen spaces display on each cycle. Once .FGO screen
spaces cause a loop, you must correct the condition and re-enable .FGO.
To
re-enable .FGO, use the FGOLOOP keyword
of the .SET command. The FGOLOOP keyword
is set to OFF until the limit of consecutive fetches
is reached. When the limit is reached, OMEGAMON for IMS sets FGOLOOP to ON,
indicating the probability of a loop. To reset .FGO,
issue the .SET command and replace the ON argument
with OFF.
Testing .FGO routines
Because FGOLOOP=ON causes
.FGO not to bypass the OMEGAMON for IMS cycle
and the terminal display, you might want to turn it on yourself to
test your screen space fetch routines.