This topic contains overviews of the major diagnostic aids that are provided for VSAM subcomponents and cites publications that contain more detailed information.

• Access method services (AMS) diagnostic aids.
• Catalog management diagnostic aids.
• VSAM OPEN/CLOSE/end-of-volume (O/C/EOV) diagnostic aids.
• VSAM record-level sharing diagnostic aids.
• VSAM record management (R/M) diagnostic aids.