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The Question is: How can my COM file find out the name of the batch job that runs it? We have a standard error program, ABORT.COM, that is called when there is an error in processing. ABORT sends a VMS mail message and terminates all processing. All ABORT can say in it s mail message, though, is "Check log file." We don't know what the name of the log file is! We could have had a crash in GET_DATA.COM, or in DTC.COM, or in any number of programs that run ABORT. How can ABORT find out, if the chain of command is GET_D ATA.COM running GET_PRICES.COM running ABORT.COM, what the chain was, and that the log file is GET_DATA.LOG? The Answer is : Information about any batch job can be obtained using the lexical function
F$GETQUI (or the corresponding system service SYS$GETQUI). In the specific
case of the logfile, things can be a bit tricky. If the log file was
explicitly specified with the /LOG qualifier when the job was submitted, then
the QUI item LOG_SPECIFICATION will return its name. If however it was
defaulted, the return value of LOG_SPECIFICATION will be blank. The default
log file is in the SYS$LOGIN directory of the username under which the job
was submitted using the same name as the job. Here is a sample procedure
which returns some information about the currently executing job, along with
some sample output:
JOBINFO.COM
$ clear = F$GETQUI("CANCEL_OPERATION",,,)
$ entry = F$GETQUI("DISPLAY_JOB","ENTRY_NUMBER",,"THIS_JOB")
$ job_parameter_p1 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_1",entry,"")
$ job_parameter_p2 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_2",entry,"")
$ job_parameter_p3 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_3",entry,"")
$ job_parameter_p4 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_4",entry,"")
$ job_parameter_p5 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_5",entry,"")
$ job_parameter_p6 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_6",entry,"")
$ job_parameter_p7 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_7",entry,"")
$ job_parameter_p8 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_8",entry,"")
$ job_name = F$GETQUI("DISPLAY_ENTRY","JOB_NAME",entry,"")
$ job_logfile = F$GETQUI("DISPLAY_ENTRY","LOG_SPECIFICATION",entry,"")
$ job_username = F$GETQUI("DISPLAY_ENTRY","USERNAME",entry,"WILDCARD")
$ count=1
$ next_file:
$ procedure_'count' = F$GETQUI("DISPLAY_FILE","FILE_SPECIFICATION",,)
$ IF procedure_'count' .EQS. "" THEN GOTO no_more_files
$ count=count+1
$ GOTO next_file
$!
$ no_more_files:
$ SHOW SYMBOL/ALL
$ EXIT
Sample output
$ submit/log=sys$login:logfile.log/param=("first","second") ajob, login
$ @SYS$LOGIN:JOBINFO
$ clear = F$GETQUI("CANCEL_OPERATION",,,)
$ entry = F$GETQUI("DISPLAY_JOB","ENTRY_NUMBER",,"THIS_JOB")
$ job_parameter_p1 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_1",entry,"")
$ job_parameter_p2 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_2",entry,"")
$ job_parameter_p3 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_3",entry,"")
$ job_parameter_p4 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_4",entry,"")
$ job_parameter_p5 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_5",entry,"")
$ job_parameter_p6 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_6",entry,"")
$ job_parameter_p7 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_7",entry,"")
$ job_parameter_p8 = F$GETQUI("DISPLAY_ENTRY","PARAMETER_8",entry,"")
$ job_name = F$GETQUI("DISPLAY_ENTRY","JOB_NAME",entry,"")
$ job_logfile = F$GETQUI("DISPLAY_ENTRY","LOG_SPECIFICATION",entry,"")
$ job_username = F$GETQUI("DISPLAY_ENTRY","USERNAME",entry,"WILDCARD")
$ count=1
$ next_file:
$ procedure_1 = F$GETQUI("DISPLAY_FILE","FILE_SPECIFICATION",,)
$ IF procedure_1 .EQS. "" THEN GOTO no_more_files
$ count=count+1
$ GOTO next_file
$ next_file:
$ procedure_2 = F$GETQUI("DISPLAY_FILE","FILE_SPECIFICATION",,)
$ IF procedure_2 .EQS. "" THEN GOTO no_more_files
$ count=count+1
$ GOTO next_file
$ next_file:
$ procedure_3 = F$GETQUI("DISPLAY_FILE","FILE_SPECIFICATION",,)
$ IF procedure_3 .EQS. "" THEN GOTO no_more_files
$ no_more_files:
$ SHOW SYMBOL/ALL
CLEAR = ""
COUNT = 3 Hex = 00000003 Octal = 00000000003
ENTRY = 170 Hex = 000000AA Octal = 00000000252
JOB_LOGFILE = "$1$DKA100:[WIZARD]LOGFILE.LOG;"
JOB_NAME = "AJOB"
JOB_PARAMETER_P1 = "first"
JOB_PARAMETER_P2 = "second"
JOB_PARAMETER_P3 = ""
JOB_PARAMETER_P4 = ""
JOB_PARAMETER_P5 = ""
JOB_PARAMETER_P6 = ""
JOB_PARAMETER_P7 = ""
JOB_PARAMETER_P8 = ""
JOB_USERNAME = "WIZARD"
P1 = ""
P2 = ""
P3 = ""
P4 = ""
P5 = ""
P6 = ""
P7 = ""
P8 = ""
PROCEDURE_1 = "_$1$DKA100:[WIZARD]AJOB.COM;1"
PROCEDURE_2 = "_$1$DKA100:[WIZARD]LOGIN.COM;54"
PROCEDURE_3 = ""
$ EXIT
WIZARD job terminated at 27-JUN-2000 11:57:35.87
Accounting information:
Buffered I/O count: 60 Peak working set size: 1856
Direct I/O count: 29 Peak virtual size: 167584
Page faults: 438 Mounted volumes: 0
Charged CPU time: 0 00:00:00.04 Elapsed time: 0 00:00:00.32
See the DCL Dictionary or HELP LEXICAL under F$GETQUI and/or System Services
Reference Manual SYS$GETQUI(W) for details of all the item codes available
(there are lots!).
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