Safeguard Management Programming Manual (G06.29+, H06.08+, J06.03+)

Glossary
Safeguard Management Programming Manual—422086-028
Glossary-6
end-list token
end-list token. A syntax token that ends a list. SPI defines a single end-list token, whose
token code is ZSPI-TKN-ENDLIST. See also list token and syntax token.
enumerated type. A 16-bit signed data type that has one of a specified list of values with
designated meanings. The enumerated type is one of the standard token data types
defined by SPI, but the list of acceptable values and what they mean varies depending
on the token number and is defined by the subsystem.
error. A condition that causes a command or other operation to fail. See also warning.
error list. A grouping of tokens used within a response record to provide error and warning
information. An error list consists of a list token that denotes an error list (different from
the token that starts a data list or a generic list), followed by an error token, other
tokens explaining the error (these are optional), and an end-list token. Error lists can
be nested within other error lists. The return token cannot be included in an error list.
See return token.
error number. A value that can be assigned to a return token or to the last field of an error
token to identify an error that occurred. SPI defines a small set of error numbers, but
most error numbers are defined by subsystems.
error token. A response token that indicates the reason an error occurred in performing a
command. Subsystems for the NonStop servers enclose each error token in an error
list, which can also contain additional information about the error. A response record
must contain a return token and can also contain error lists to explain the error further.
The token code for the error token is ZSPI-TKN-ERROR. Its value is a structure
consisting of the subsystem ID and an error number identifying the error. See error list,
error number, and return token.
event. A significant change in some condition in the system or network. Events can be
operational errors, notifications of limits exceeded, requests for action needed, and so
on.
event log. A file or set of files maintained by the Event Management Service (EMS) to store
event messages generated by subsystems.
event management. The reporting and logging of important events that occur in a system
or network, the distribution and retrieval of information concerning those events, and
the actions taken by operations personnel or software in response to the events. See
also control and inquiry
.
Event Management Service (EMS). A software facility that provides event-message
collection, logging, and distribution facilities for the operating system. It provides for
different descriptions of events for human beings and for programs, lets an operator or
application select conveniently from event-message data, and allows for flexible
distribution of event messages within a system or network. It has programmatic
interfaces based on SPI for both event reporting and event retrieval. See event
message.