Subsystem Control Point (SCP) Management Programming Manual
Event Messages
Subsystem Control Point (SCP) Management Programming Manual—520619-001
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3 ZSCP-EVT-USESEGMENT-ERR
overloaded. For ALLOCATESEGMENT and SEGMENT_ALLOCATE_ error codes, 
see Guardian Procedure Errors and Messages Manual.
3 ZSCP-EVT-USESEGMENT-ERR
An SCP call to the Guardian USESEGMENT procedure failed.
Cause. The SCP process called the USESEGMENT procedure to access a segment, but 
the USESEGMENT procedure failed because the specified segment has not been 
allocated.
Effect. The SCP process issues this message, stops the backup process if there is one, 
and calls the ABEND or PROCESS_STOP_ procedure. The file system returns error 
201 (nonexistent process) to every application that is awaiting a response from the SCP 
process. The process that created the SCP process receives system message –101, 
indicating process abnormal deletion.
Recovery. If there is no backup process, direct command messages to another SCP 
process or hold them until another SCP process is started. If the problem recurs, obtain 
this information (if available) before calling a Compaq representative: the 
SAVEABEND file, the SCF log, the SCP trace file, and the CPU dump.
4 ZSCP-EVT-BAD-CHKPT
An SCP call to the Guardian CHECKPOINT procedure failed.
Cause. An SCP call to the CHECKPOINT procedure failed. The CHECKPOINT 
procedure checkpoints data into the CHECKMONITOR data area of the backup process.
Effect. The backup process does not have the information it needs to take over if the 
primary process stops. The SCP process stops the backup process if there is one and 
calls the ABEND or PROCESS_STOP_ procedure. The file system returns error 201 
(nonexistent process) to every application that is awaiting a response from the SCP 
process. The process that created the SCP process receives system message –101, 
indicating process abnormal deletion.
Tokens in Event Message
(contains only standard event-message tokens)
Message Text
USESEGMENT failed
Tokens in Event Message
(contains only standard event-message tokens)
Message Text
Backup received invalid checkpoint










