Two MVS™ services exist specifically to support the dumping of coupling facility structures. The first, IHABLDP, lets you build a parameter list to be passed as input to SDUMPX, the SVC Dump macro. Using the IHABLDP macro is the only way to inform SDUMPX of the specific structure information you want included in the dump.

The syntax of SDUMPX is described in z/OS MVS Programming: Authorized Assembler Services Reference LLA-SDU. The syntax of IHABLDP is described in z/OS MVS Programming: Sysplex Services Reference.

The second MVS service, IXLZSTR, lets you to extract specific structure information from an SVC dump in an IPCS environment. See z/OS MVS IPCS User's Guide for guidance in working in an IPCS environment.

The syntax of IXLZSTR is described in z/OS MVS Programming: Sysplex Services Reference.

MVS also provides a set of macros that you can use to map the coupling facility structure data in the dump data set, where the structure information resides in IPCS COMPDATA spaces.