Explained: SMF Records

A batch job ran overnight and consumed three times its usual CPU. A CICS transaction that normally completes in 12 milliseconds is suddenly taking 200. A user account was used to access a sensitive dataset at 3am. A DB2 tablespace is approaching its storage limit. None of these events sent an alert. Nobody was watching at the time. But every one of them left a record. Because on z/OS, almost everything that happens is written down. That writing-do… Read More