Neoview Workload Management Services Guide (R2.3)

When a query is submitted to the Neoview platform, the NDCS server passes the execution
decision making to WMS. Figure 1-2 shows how WMS handles an incoming query.
Figure 1-2 How WMS Handles an Incoming Query
When handling an incoming query, WMS first checks that WMS is in the active state. WMS is
inactive when a user places it on hold by using the HOLD command. For more information, see
the “HOLD Command” (page 63). If WMS is inactive (that is, on hold), WMS rejects the request
to execute the query and returns an error message to the application. If WMS is active, WMS
checks that the total number of executing and waiting queries in WMS is less than or equal to
the internal default limit of 1000 per segment. If the total number of queries in WMS exceeds the
limit, WMS rejects the request to execute the query and returns an error message to the application.
18 Introducing Neoview Workload Management Services (WMS)