Dump analysis and elimination (DAE) allows an installation to suppress SVC dumps and SYSMDUMP ABEND dumps that are not needed because they duplicate previously written dumps. To identify the cause of previous and requested dumps, DAE uses symptom strings, which contain data that describes a problem. DAE stores these symptom strings in a DAE data set that you provide.

You can use the DAE data set in a single-system environment, or the systems in a sysplex can share a single DAE data set. The way you use the DAE data set determines how you specify the data set to global resource serialization to avoid contention for that data set.

Using DAE in a Single-System Environment

The default DAE data set, SYS1.DAE, is already defined in the default RNLs as a local resource. IBM® suggests that you name the DAE data set SYS1.DAE in a single system because you do not need to change the data set definition for global resource serialization.

For a single system, the default RNLs contain the generic qname entry SYSDSN in the SYSTEM inclusion RNL and a specific rname entry for SYS1.DAE in the SYSTEMS exclusion RNL.

Using DAE in a Sysplex

The shared DAE data set, if it is not named SYS1.DAE, is already set up as a global resource. IBM suggests that you provide a name other than SYS1.DAE for the DAE data set to be shared in the sysplex because then you do not need to change the data set definition for global resource serialization.

For a sysplex, the default RNL contains the generic qname entry SYSDSN in the SYSTEM inclusion RNL. An entry is not needed in the SYSTEMS exclusion RNL for a global resource.