(ZOS) SMF record type 120: overview
Information resulting from the SMF data gathering process for WebSphere Application Server for z/OS is held in SMF record type 120.
This information is typically presented with the help of a SMF data viewing tool. This record format description is intended to enable your tool providers to design a SMF data viewing tool. Your system administrators will use a SMF data viewing tool with a description presented by your tool provider, since it requires them to make proper selections that limit the amount of presentation data. For example, they might want to view a specific time frame and only specific containers, classes, and methods. They may also occasionally need to refer to the record descriptions.
Two types of SMF records can be produced: activity records and interval records.
- Activity records are gathered as each activity within a server is completed. An activity is a logical unit of business function. It can be a server or user-initiated transaction.
- Interval records consist of data gathered at installation-specified intervals and provide capacity planning and reliability information.
Eight records can be produced:
- the Server Activity record: Subtype 1
- the Server Interval record: Subtype 3
- the J2EE Container Activity Record: Subtype 5
- the J2EE Container Interval Record: Subtype 6
- the WebContainer Activity record: Subtype 7
- the WebContainer Interval record: Subtype 8
- the Request Activity record: Subtype 9
- the Outbound Request record: Subtype 10
For additional information about using SMF records, see z/OS MVS™ System Management Facilities (SMF), SA22-7630.
View records with the SMF Browser
Use the SMF Browser, that is available on the product download site, to display record type 120. To download the SMF Browser, go to: https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=zosos390.
The documentation provided with the download package describes how to use this tool.
MVS System Management Facilities (SMF)