Darya.zelenina: Created page with "'''SYSTEM_CHECK''' is a system parameter that investigates intermittent system failures by enabling a number of run-time consistency checks on system ope..."

2019-07-02T08:41:08Z

Created page with "'''SYSTEM_CHECK''' is a system parameter that investigates intermittent system failures by enabling a number of run-time consistency checks on system ope..."

New page

'''SYSTEM_CHECK''' is a [[System Parameters|system parameter]] that investigates intermittent system failures by enabling a number of run-time consistency checks on system operation and recording some trace information.

Enabling SYSTEM_CHECK causes the system to behave as if the following system parameter values are set (although the values of the following parameters are not actually changed):

{| class="wikitable"
! colspan="col" | Parameter
! colspan="col" | Value
! colspan="col" | Description
|-
| [[BUGCHECKFATAL]]
| 1
| Crash the system on nonfatal bugchecks.
|-
| [[POOLCHECK]]
| %X616400FF
| Enable all poolchecking, with an allocated pool pattern of %x61616161 ('aaaa') and deallocated pool pattern of x64646464 ('dddd').
|-
| [[MULTIPROCESSING]]
| 2
| Enable full synchronization checking.
|}

While SYSTEM_CHECK is enabled, the previous settings of the [[BUGCHECKFATAL]] and [[MULTIPROCESSING]] parameters are ignored. However, setting the parameter POOLCHECK to a nonzero value overrides the setting imposed by SYSTEM_CHECK.

Setting SYSTEM_CHECK creates certain image files that are capable of the additional system monitoring. These image files are located in [[SYS$LOADABLE_IMAGES]] and can be identified by the suffix _MON. For information about the type of data checking performed by SYSTEM_CHECK, see the description of the [[ACP_DATACHECK]] parameter. For information about the performance implications of enabling SYSTEM_CHECK, see [https://www.vmssoftware.com/pdfs/HP_branded_docs_1st_batch/OpenVMS_Performance_Management_manual.pdf OpenVMS Performance Management].

[[Category:System Parameters]]

SYSTEM CHECK - Revision history

Darya.zelenina: Created page with "'''SYSTEM_CHECK''' is a system parameter that investigates intermittent system failures by enabling a number of run-time consistency checks on system ope..."