Pathway Products Glossary

Glossary

Compaq NonStop™ Pathway Products Glossary—426762-001

Glossary-14

keyword. A word in a command string or programming language that must be spelled and

positioned in a prescribed way, usually to indicate the meaning of an adjacent parameter.

LCS process. See link control service (LCS) process.

library. A set of related files or common files that can be accessed by multiple programs or

processes.

linear expandability. See scalability

link. (1) An open of a server process within a server class. In a PATHMON environment

without Pathway/XM, or when Pathway/XM direct or replicated servers are used, the

following occurs: A link manager—that is, a TCP or a LINKMON process—sends a

request to a PATHMON process for a link to a server in a specified server class; the

PATHMON process selects a server process in that server class (possibly starting a new

server process if necessary); and then the PATHMON process returns the name of the

server process to the requesting link manager. See also link granting

and link manager.

(2) To examine, collect, associate together, and modify code and data blocks from one

or more object files to produce a target object file. On NonStop™ Himalaya systems,

linking for TNS/R native object files is performed by the nld utility.

link access. The actual transfer of data from a requester to a server process. In a PATHMON

or Pathway/XM environment, link access is provided by TCPs and LINKMON

processes. See also link granting

link control service (LCS) process. A process in a Pathway/XM environment that manages

requests to a distributed server class. It acts as a proxy server, managing the resources of

the server class, controlling the server-class transaction queue, and forwarding requests

to server processes. One LCS process is provided for each distributed server class under

each PATHMON process running in the Pathway/XM environment. See also

distributed server class

and process broker (PB) process.

link granting. The process of selecting a particular server process in a server class to handle

a request from a link manager (TCP or LINKMON process) on behalf of a requester.

In a PATHMON environment without Pathway/XM, or when Pathway/XM direct or

replicated servers are used, link granting is done by the PATHMON process. In a

Pathway/XM environment, link granting is done by the process broker (PB) process. See

also link

, link access, and process broker (PB) process.

link management. The act of coordinating the sharing of links between requester or client

processes and server processes.