Technical data

SDA Description
Table SDA–1 (Cont.) Selecting and Displaying Information About Processes
Operation SDA Command
Select a process to become the SDA current process SET PROCESS
Examine the memory of any process SHOW PROCESS
Select a specific processor in a multiprocessing system as
the subject of analysis
SET CPU
Display information about the state of a processor at the
time of the system failure
SHOW CPU
Display multiprocessor synchronization information SHOW SPINLOCKS
Display the contents of a specific process stack or the
interrupt stack of a specific processor
SHOW STACK
Display the layout of the loadable executive images SHOW EXECUTIVE
Table SDA–2 describes information that you can display about data structures.
Table SDA–2 Displaying Information about Data Structures
Operation SDA Command
Display memory management data structures SHOW POOL,
SHOW PFN_DATA,
SHOW PAGE_TABLE
Display device status, as reflected in system data
structures
SHOW DEVICE
Display OpenVMS RMS data structures of a process SHOW PROCESS/RMS
Display lock management data structures SHOW RESOURCE,
SHOW LOCK
Display information contained in various local area
network (LAN) data structures
SHOW LAN
Display VAXcluster management data structures SHOW CLUSTER,
SHOW CONNECTIONS,
SHOW RSPID,
SHOW PORTS
Table SDA–3 describes SDA commands that you can use to examine, evaluate,
and validate information.
Table SDA–3 Examining, Evaluating, and Validating Information
Operation SDA Command
Evaluate an expression in hexadecimal and decimal,
interpreting its value as a symbol, a condition value, a
page table entry (PTE), or a processor status longword
(PSL)
EVALUATE
Examine the contents of memory locations, optionally
interpreting them as MACRO instructions, a PTE, or a
PSL
EXAMINE
Validate the integrity of the links in a queue VALIDATE QUEUE
Table SDA–4 describes the SDA commands that you can use to search for, format,
and copy information.
SDA–2