Neoview Workload Management Services Guide (R2.4)

Figure 1-2 How the NDCS Server Assigns a Client Session to a Service
The NDCS server assigns the
client session to the service.
vst106.vsd
Yes
Do the connection
attributes match the
connection rule of a
service?
No
Incoming
client
session
The NDCS server assigns the client
session to HP_DEFAULT_SERVICE.
The NDCS server gets the
connection attributes
of the session.
WMS sets the
warning level to low
and saves warning
information.
Is WARN-LOW defined
for the connection
rule?
WMS sets the
warning level to low
and saves warning
information.
WMS does not set
the warning level or
save warning
information.
Yes
No
Are there user-defined
connection rules in
WMS?
Yes
No
For information on connection rules, see “Connection Rules” (page 40).
After the client application connects to the Neoview platform and is assigned to a service, WMS
proceeds with the “Compilation Phase” (page 19).
Compilation Phase
After a query is prepared, the NDCS server passes the execution decision making to WMS. WMS
compares the compiler estimates of the query against the compilation rules set for the service
and, along with other criteria, determines whether to permit the query to start executing. Figure 1-3
(page 20) shows the sequence of events (designated by the numbers in the diagram) that occur
when compilation rules are applied during the compilation phase.
How WMS Applies Rules and Services 19