Subsystem Control Point (SCP) Management Programming Manual

Event Messages
Subsystem Control Point (SCP) Management Programming Manual—520619-001
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8 ZSCP-EVT-SWITCH-CMD-FAIL
If there is no backup process, 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.
8 ZSCP-EVT-SWITCH-CMD-FAIL
A SWITCH command issued to the SCP process failed.
Cause. A SWITCH command issued to the SCP process failed because of a problem
with the CHECKPOINT procedure, which SCP calls to complete the SWITCH
command.
Effect. The backup process does not receive the most recent checkpoint information.
The SCP process issues this message and calls the ABEND or PROCESS_STOP_
procedure. The backup SCP process receives system message –101, indicating process
abnormal deletion, and resumes processing from a previous checkpoint.
If there is no backup process, 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.
9 ZSCP-EVT-CHKPT-OVERFLOW
An SCP call to the Guardian CHECKPOINT procedure failed.
Tokens in Event Message
(contains only standard event-message tokens)
Message Text
SWITCH command failed
Tokens in Event Message
(contains only standard event-message tokens)
Message Text
CHECKPOINT data has overflowed