Summary of system logger services

System logger provides the following set of services:

IXGINVNT: Define and maintain log stream and coupling facility structure information in the LOGR policy dynamically. See page IXGINVNT: Managing the LOGR policy.
You can also use the IXCMIAPU utility to specify log stream and structure definitions in the LOGR policy. IXCMIAPU also enables you to request a report of current log stream definitions.
IXGCONN: Connect and disconnect an application to and from a log stream. See page IXGCONN: Connecting to and disconnecting from a log stream.
IXGWRITE: Write user-defined log data to a log stream. See page IXGWRITE: Writing to a log stream.
IXGBRWSE: Browse (read) data from a log stream. See page IXGBRWSE: Browsing/reading a log stream.
IXGDELET: Delete data from a log stream. See page IXGDELET: Deleting log blocks from a log stream.
IXGIMPRT: Import (write) log blocks to a log stream, with a log block identifier and time stamp. See page IXGIMPRT: Import log blocks.
IXGQUERY: Retrieve information from a log stream. See page IXGQUERY: Get information about a log stream or system logger.
IXGOFFLD: Initiate an offload of log data from the coupling facility structure for coupling facility log streams and from local storage buffers for DASD-only log streams to DASD log data sets. See page IXGOFFLD: Initiate offload to DASD log data sets.
IXGUPDAT: Modify the UTC time stamp maintained in the control information for a log stream. See page IXGUPDAT: Modify log stream control information.

The following services contain parameters for both authorized and unauthorized programs:

IXGCONN
IXGBRWSE
IXGWRITE
IXGDELET

All other system logger services and their parameters can be used by any program. All the unauthorized guidance for System Logger is contained in this chapter. See the z/OS MVS Programming: Authorized Assembler Services Guide for guidance on using the authorized services.