We just experienced a 4 minute 'outage' on our z/OS system. (single image z/OS 1.9 system).
By 'outage', I mean we could not communicate with MVS through TSO or the z/OS consoles. There is a 4 minute gap in SYSLOG. The same for CICS, IMS and DB2 logs. There were no system dumps or other indicators. We reviewed SYSLOG for the 15 minutes that preceeded the 'outage' and did not find anything. TMONMVS had a 4 minute gap in the collector during the 'outage'. Any suggestions how we can determine what happened? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html

