1. Loop
2.
3. Abend (abnormal end)
4. Incorrect results
The most obvious indication of a problem is the abnormal termination
of a program.
issued. Figure 1 lists the possible abend messages and identifies the
type of abend for these messages.
Message
(Alarm rings)
Type of Abend
disk. Restart is automatic.
If the dump
ters a program check, ma
chine check, or fatal
indicating the error.
code
encounters a program check,
a machine check, a fatal
to a certain warm start
cylinder or warm start data
conditions, a message is
issued indicating the error
and
with code
program encounters a severe
error, a message is issued
indicating the error and
code