Joined: 11 Jan 2006 Posts: 66 Location: Lower Saxony (DE)
maybe there are better categories in this forum i.e. »CLIST & REXX« or »TSO/ISPF« to place my question.
But well, I post it here in this category:
In ISPF 3.2 (or 3.4 with line command »I«) you can check the attributes and properties of a dataset.
Data Set Information
Data Set Name . . . : SYS1.PROCLIB
General Data Current Allocation
Volume serial . . . : LPSYSO Allocated cylinders : 10
Device type . . . . : 3390 Allocated extents . : 1
Organization . . . : PO Maximum dir. blocks : 100
Record format . . . : FB
Record length . . . : 80
Block size . . . . : 27920 Current Utilization
1st extent cylinders: 10 Used cylinders . . : 6
Secondary cylinders : 0 Used extents . . . : 1
Used dir. blocks . : 29
Number of members . : 178
Creation date . . . : 2004/08/13
Referenced date . . : 2018/07/17
Expiration date . . : ***None***
'Cause we processing a number of datasets (sequential and PDS(-E)) and member via batch jobs we'd like to analyse these information (including that ones about the directory blocks) in advance.
Does anybody of you know a tool or tso command to retrieve the information the mentioned ISPF panel provides of several datasets in a list via a batch job?
If there is no command or system utility that can be used in a jcl directly maybe there is a module that retrieves these information and can be integrated in a COBOL main module?
Joined: 30 Nov 2013 Posts: 780 Location: The Universe
Look at the utilities on the CBT "tape." I'm pretty certain you will find something of use. By the rules of the web site I cannot insert the address of the CBT tape page here, but Google is your friend.
Mass reading of PDS directories fell by the way side with the advent of effective data security tools like RACF, Top Secret and ACF2. None of them provided a tool to permit an unauthorized program to pre test if the program can open a data set without getting an S913 ABEND.
Your idea about a tool that would integrate with Cobol is good, but how the tool would present data set information to the Cobol program presents difficulties I do not think anyone was interested in developing. I'm not aware of any such tool.
IBM provided the interface routine to perform ISPF 3.2 functions via CALL. But it requires full ISPF environment to be established before any call to this interface; this is headache.
DSINFO—data set information dialog service