As others have said, there is no universal rule, just conventions adopted in each shop--or in each mind! I personally think that 'SYS3' for 3rd party products is a pretty cute mnemonic, but it's certainly not pervasive. One requirement that we recently got reminded of is that a link list data sets must be cataloged in the master catalog for 'normal' processing. You can use a user cataloged data set with restrictions:
"If you plan to use a user catalog, you should be aware that the system will not find the data set unless you specify both the name of the data set and the volume serial number (VOLSER) of the DASD volume on which the data set resides. (This restriction also applies if you are defining the LNKLST concatenation in LNKLSTxx.)" Specifically, we tried to link-list a user catalog library just for an IEFSSNxx init routine. Module was not found. So if you plan to use anything other than 'SYS1' for such purposes, be sure that you put the whole set into MCAT. . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-543-6132 Office ⇐=== NEW [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Carmen Vitullo Sent: Monday, September 25, 2017 10:20 AM To: [email protected] Subject: (External):Re: SYS3 datasets Unfortunately and fortunately I've had the opportunity to work in many different shops, the phrase 'almost all shops use SYS3' is just B.S. It all comes down to who started or documented the standards for that company or site, I've worked for companies that added a site ID to a HLQ, the standards were company wide, some sites had rules that OEM or vendor products were SYSP1.vender.product.libtype, and when multiple systems joined a sysplex SYS8 was used for sysplex datasets, so the rule is more a standard for the site or company. some very strange and don't make much sense, like the outsourcing company I worked for tried to force OEM* to the HLQ for program products, when OTHER standards were already in place in a 16 system sysplex with multiple customers, try forcing a long standing customer to accept that change :( same standards are being used for the Unix directory structure, everyone has an opinion on how it should be designed and they're no right or wrong way as long as everyone adheres to the standards. my 2 cents Carmen ----- Original Message ----- From: "Tony Thigpen" <[email protected]> To: [email protected] Sent: Sunday, September 24, 2017 9:18:05 PM Subject: SYS3 datasets We have a staff z/OS systems programmer who claims that: "Almost all shops use the SYS3. HLQ to indicate third party software." So new software installs *have* to follow that "rule". (Past installs did not follow such a rule.) I am thinking that this "rule" is really just *his* rule. Opinions? How many other sites follow such a rule? -- Tony ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
