DAMP can analyze not only dump files containing a BS2000 system, but basically all files that can be recognized by DAMP as a BS2000 dump file due to their metadata and analyzed as “real”. A BS2000 system can be analyzed virtually and symbolically.
SLED and SNAP
The diagnosis objects SLED and SNAP are created by dump file generators of the same names and can be analyzed as “real” or “virtual”. A SNAP always contains the BS2000 operating system. A SLED could also have been generated for other operating systems. Both types of dump files are created when the system is in an inactive state:
SLED, following a system abort
SNAP, on stopping the system for a brief period (up to 24 seconds)
The scope of both these dumps can be controlled via parameters, but the SNAP is subject to significant restrictions due to the time limit.
A SLED may contain multiple products:
Complete VM2000 SLED
A complete VM2000 SLED is a SLED file that contains the data of the VM2000 product as well as the data of the VM2000 guest systems. VM2000 guest systems run as virtual machines (VM) on a VM2000 system and may include both BS2000 as well as other operating systems.
SLED from a SLED
A SLED from a SLED is created if a further SLED was loaded before running the SLED. A SLED from a SLED is a file containing the data of the product SLED as well as the data of the product or products (for VM2000) that was run earlier.
System dump, user dump and area dump
The diagnosis objects SYSDUMP, USERDUMP and AREADUMP are created by the dump file generator CDUMP. They always contain data of the BS2000 and can only be virtually analyzed. The data is generated during the session and includes the memory areas of a task and selected system areas. The system dump provides diagnostic documentation for the system diagnostics staff; the user dump contains such details for the nonprivileged BS2000 user. An area dump contains memory areas defined by nonprivileged users.
SELF-LOADER
Any dump file that can be processed with DAMP as “real” can be opened by the user with the SELF-LOADER attribute. This enables the real-time analysis of dump files (SLEDs and SNAPs) that contain some other operating system or a BS2000 system with damaged BS2000 structures.