Is there a way to see the details about the ALOG file, such as the values of BLOCKs, WARNING, and how full it is?

Products

• TLMS Tape Management

Issue/Introduction

Is there a way to see the values of the BLOCKS and WARNING control statements used during the initialization of the ALOG file? Also is there a way to see the how full the ALOG file is at any time?

Resolution

To get details of the ALOG status and definition, run an IDCAMS with the following SYSIN:

//SYSIN DD * 

PRINT INFILE(IN) COUNT(1) DUMP

 

The output will produce a dump with the first record as follows:

00000001 00000mmm 00000nnn etc.

00000001 =    the pointer where the next record will be written. 

00000mmm = hex value of the total defined blocks - convert this to decimal.

00000nnn =    hex value of the warning level.

 

Here is a sample:

RECORD SEQUENCE NUMBER - 1 

00000 00007F60 00012EBC 00012CC8 0110259F 06070036 00000000 00000000 00000000 

00020 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

>>>> 00007F60 >>> x'7F60' = 32608 ; this will be the next record to be written.

>>>> 00012EBC >>> BLOCKS:  x'12EB6' = 77500; this is the number of blocks used during the initialization of the ALOG.

>>>> 00012CC8 >>> WARNING: x'12CC8' = 77000; this is the threshold number at which overflow warning messages are written to the console.