Finding information for system logger applications

System logger applications can be supplied by IBM®, independent software vendors, or written at your installation. For each of these applications, some information is necessary for set-up and use.

Some of the IBM-supplied system logger applications are:

CICS® log manager is a CICS system logger application that replaces the journal control management function. It provides a focal point for all CICS system log, forward recovery log, and user journal output within a sysplex and flexible mapping of CICS journals onto log streams. CICS log manager also enables faster CICS restart, dual logging, and flexible log and journal archiving.
Logrec log stream is an MVS™ system logger application that records hardware failures, selected software errors, and selected system conditions across the sysplex. Using a logrec log stream rather than a logrec data set for each system can streamline logrec error recording.
Operations log (OPERLOG) is an MVS system logger application that records and merges messages about programs and system functions (the hardcopy message set) from each system in a sysplex that activates OPERLOG. Use OPERLOG rather than the system log (SYSLOG) as your hardcopy medium when you need a permanent log about operating conditions and maintenance for all systems in a sysplex.
APPC/MVS uses a System Logger log stream whenever a synchronization level of SYNCPT is selected by a transaction program, and when an LU has been made syncpt-capable. This log stream is used to store persistent data needed in support of the two-phase commit protocol.
IMS™ Common Queue Server (CQS) log manager is an IMS system logger application that records the information necessary for CQS to recover structures and restart. CQS writes log records into a separate log stream for each coupling facility list structure pair that it uses. IMS CQS log manager uses coupling facility based log streams.
RRS (resource recovery services) is an MVS system logger application that records events related to protected resources. RRS records these events in five log streams that are shared by systems in a sysplex. Use the information in z/OS MVS Programming: Resource Recovery about defining the log streams with the information in Preparing to use system logger applications to set up and use the RRS system logger application.

Use the following topics to find the information you'll need to set up and use these system logger applications:

For writing your own system logger application using the system logger services, see

To prepare to use a system logger application supplied by a independent software vendor, see Preparing to use system logger applications.