Record type 88 focuses on the log stream data for a system in a sysplex, including use of interim storage. Interim storage is where log data is initially written, before being written to DASD log data sets. Data in interim storage can be accessed quickly without incurring DASD I/O. In a coupling facility log stream, interim storage for log data is in coupling facility list structures. In a DASD-only log stream interim storage for log data is contained in local storage buffers on the system and duplexed to staging data sets. Using record type 88 can help an installation avoid the STRUCTURE FULL exception, and perform other tuning and/or capacity planning analysis.
Record type 88 focuses on the coupling facility structure data and the log stream data for a system in a sysplex. Using the record can help an installation avoid the STRUCTURE FULL exception, and perform other tuning and/or capacity planning analysis.
Given a specific log stream, a record type 88 summarizes all of that log stream's activity on that system, as long as at least one address space is connected to the log stream on that system. If no system logger write activity is performed against the log stream during a particular SMF interval, a record is produced showing zero for the various system logger activity total fields.
The system logger SMF record is cut for all log streams connected at the expiration of the SMF global recording interval. Record type 88 is also triggered by the disconnection of the last log stream on that system.