ARC0028I

Explanation
 DFSMShsm generates this message whenever
an error is detected opening an activity log or an I/O error is detected
writing a message to the log.
 For ERROR OPENING LOG, another
message that displays the reason for the error will precede this message.
The possible reasons are:  An error in getting storage
An allocation error
An open error

 For LOG I/O ERROR, an ARC0645I message indicating why
the log is released will precede this message. The explanation part
of the message will not appear.
 The following inserts are possible
for the explanation:  COMMAND ACTIVITY LOGGING DISABLED  Messages that are intended
for the command activity log will not be issued.

BACKUP ACTIVITY LOGGING DISABLED  Messages that are intended
for the backup activity log will not be issued.

MIGRATION ACTIVITY LOGGING DISABLED  Messages that are intended
for the migration activity log will not be issued.

DUMP ACTIVITY LOGGING DISABLED  Messages that are intended
for the dump activity log will not be issued.

BACKUP ACTIVITY LOGGING SWITCHED TO COMMAND LOG  Messages that
are intended for the backup activity log will be rerouted to the command
activity log.

MIGRATION ACTIVITY LOGGING SWITCHED TO COMMAND LOG  Messages
that are intended for the migration activity log will be rerouted
to the command activity log.

DUMP ACTIVITY LOGGING SWITCHED TO COMMAND LOG  Messages that
are intended for the dump activity log will be rerouted to the command
activity log.

System action
 The following describes the system action on
the basis of the error condition and log type: 
 OPEN error (an error in getting storage, during allocation, or
while opening the log).  For the command activity log, command activity messages disabled.
For the backup, dump, or migration activity log, if a command
activity log exists:  ACTIVITY LOGGING SWITCHED is written to the command activity log.
The messages that normally are written to the affected activity
log will be routed to the command activity log.

If no command activity log exists:  ACTIVITY LOGGING DISABLED is written to the system operator.
The messages that normally would be written to the affected activity
log will be disabled.

I/O Error - When an I/O error is detected on an activity log,
the affected log will be closed and deallocated. A new name will be
generated for the log if output is to DASD, and a new log will be
allocated and opened. The message that was being written when the
I/O error occurred will be written to the new log when it is successfully
allocated and opened.

  Messages intended for a particular activity log can be rerouted
to the command log after an open error occurs if the command activity
log is open. Otherwise, the messages will be lost.

Programmer response
 Issue RELEASE HARDCOPY to cause existing
activity logs to be closed and deallocated, and all logs to be allocated
and opened.

Source
 DFSMShsm