VMS Help
Lexicals, F$MESSAGE
*Conan The Librarian (sorry for the slow response - running on an old VAX)
|
|
Returns as a character string the facility, severity,
identification, and text associated with the specified system
status code.
Format
F$MESSAGE(status-code[,message-component-list])
A character string containing the system message that corresponds
to the argument you specify.
Note that, although each message in the system message file has
a numeric value or range of values associated with it, there
are many possible numeric values that do not have corresponding
messages. If you specify an argument that has no corresponding
message, the F$MESSAGE function returns a string containing the
NOMSG error message.
For more information on system error messages, refer to the
OpenVMS System Messages: Companion Guide for Help Message Users.
status-code
Specifies the status code for which you are requesting error
message text. You must specify the status code as an integer
expression.
message-component-list
Specifies the system message component for which information is
to be returned. If this parameter is null or unspecified, then
all system message components are returned.
The following table describes the valid system message component
keywords:
Component
Keyword Information Returned
FACILITY Facility name
SEVERITY Severity level indicator
IDENT Abbreviation of message text
TEXT Explanation of message
Note that when the FACILITY, SEVERITY, and IDENT code keywords
are specified (individually or in combination), the resulting
message code is prefaced with the percent (%) character. The
individual parts of the message code are separated by hyphens
when multiple code keywords are specified.
When only the TEXT keyword is specified, the resulting text
is not prefaced with any character. When the TEXT keyword is
specified with the FACILITY, SEVERITY, or IDENT code keyword,
the message code is separated from the text by a combination of a
comma and a blank (, ).
$ ERROR_TEXT = F$MESSAGE(%X1C)
$ SHOW SYMBOL ERROR_TEXT
ERROR_TEXT = "%SYSTEM-F-EXQUOTA, exceeded quota"
This example shows how to use the F$MESSAGE function to
determine the message associated with the status code %X1C.
The F$MESSAGE function returns the message string, which is
assigned to the symbol ERROR_TEXT.
$ SUBMIT IMPORTANT.COM
$ SYNCHRONIZE /entry='$ENTRY'
$ IF $STATUS THEN EXIT
$!
$ JOB_STATUS = $STATUS
$!
$ IF "%JOBDELETE" .EQS. F$MESSAGE (JOB_STATUS, "IDENT")
$ THEN
.
.
.
$ ELSE
$ IF "%JOBABORT" .EQS. F$MESSAGE (JOB_STATUS, "IDENT")
$ THEN
.
.
.
$ ELSE
$ .
.
.
$ ENDIF
$ ENDIF
.
.
.
This command procedure submits a batch job and waits for it to
complete. Upon successful completion, the procedure exits. If
the job completes unsuccessfully, more processing is done based
on the termination status of the batch job.
The first command submits the command procedure IMPORTANT.COM.
In the second command, the SYNCHRONIZE command tells the
procedure to wait for the job to finish. The third command
determines if the job completed successfully and, if so, the
procedure exits. The next command saves the status in a symbol.
The first IF statement uses F$MESSAGE to determine whether
the job was deleted before execution. If so, it does some
processing, possibly to resubmit the job or to inform a user
via MAIL.
The next IF statement uses F$MESSAGE to determine whether the
job was deleted during execution. As a result, some cleanup or
human intervention may be required, which would be done in the
THEN block.
If neither IF statement was true, then some other unsuccessful
status was returned. Other processing, which would be done in
the block following the ELSE statement, might be required.
[legal]
[privacy]
[GNU]
[policy]
[netiquette]
[sponsors]
[FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.