Parameters

The parameters are:

LOGSTREAM
Indicates that the desired medium for recording logrec error and environmental records is a log stream. To use a log stream your installation must be operating at an MVS/ESA SP 5.2.0 level or higher and the logrec log stream must be defined. See z/OS MVS Setting Up a Sysplex for information about logrec log stream definitions.
DATASET
Indicates that the desired medium for recording logrec error and environmental records is a data set, which is the medium used prior to MVS/ESA SP 5.2.0. Setting the medium to data set works only if the system had originally been initiated with a data set as the logrec recording medium. If the system was not initiated with a data set logrec recording medium and the attempt is made to change to DATASET, the system rejects the attempt and maintains the current logrec recording medium.
IGNORE
Indicates that recording logrec error and environmental records is to be disabled.
Note: IBM® recommends that you use this setting only in a test environment.