One of the restrictions is no multitasking. Even in the 1960s that was bad news.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Ed Jaffe [edja...@phoenixsoftware.com] Sent: Sunday, June 18, 2023 12:05 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Checkpoint/restart in COBOL applications? On 6/18/2023 8:39 AM, Seymour J Metz wrote: > Checkpoint is an old (as in OS/360 old) facility that comes with restrictions > that make it less useful than it might otherwise be. I'm not sure what the > use case is these days. I have never seen the old checkpoint/restart facility used. -- Phoenix Software International Edward E. Jaffe 831 Parkview Drive North El Segundo, CA 90245 https://secure-web.cisco.com/1CMCOAe8gIGT3Z_zRows6OhowX_zVS1GwHrXgMB75Z80rqwMbvgS02jEdPDVjUtfqLzYCuKKDQfO27mKxcawvP1N10zcEQU4s2MWsF3uuGJ6JS7yYay25Lrv9coYuCGjtdwb7PKM8lfJ7jdTptqNUXsIVp4P_LHNbePBh6T43DMSHFEU3p8Ati6HiDJl-QAI_jYi8BvxhRO5M7WqcZ2wnn6DCs31nohrZjBijXcD8CGOHpSi5AHNjtcSsXKycGvn5wcoM91ilpJpMbpojgjYsPYihtmiyEaMVxsNcypb_3MYYXs84thmOqr1LsP5VMV0Da6Irx6j__nKAp7nfDnZTuLATqlyVEe1yzOmFCOkczVO85tNsFAlco_IIFXqEgXZeMLDEdPVAFoZtY8kh4YGdnv0SVjWvyz0jg3hB3qbLZJ0/https%3A%2F%2Fwww.phoenixsoftware.com%2F -------------------------------------------------------------------------------- This e-mail message, including any attachments, appended messages and the information contained therein, is for the sole use of the intended recipient(s). If you are not an intended recipient or have otherwise received this email message in error, any use, dissemination, distribution, review, storage or copying of this e-mail message and the information contained therein is strictly prohibited. If you are not an intended recipient, please contact the sender by reply e-mail and destroy all copies of this email message and do not otherwise utilize or retain this email message or any or all of the information contained therein. Although this email message and any attachments or appended messages are believed to be free of any virus or other defect that might affect any computer system into which it is received and opened, it is the responsibility of the recipient to ensure that it is virus free and no responsibility is accepted by the sender for any loss or damage arising in any way from its opening or use. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN