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An Administrator reports a power user running a query that is consuming significant CPU in a final step product join and impacting other users due to the high priority of the workload.
Upon contacting the user in the application team, they are advised that the query is a request from the CEO and needs to be completed. The team decides to remediate the situation by changing the workload to a lower priority.
Which Viewpoint portlet should be used to make this adjustment?
The Workload Designer portlet in Viewpoint is used to manage and adjust workloads, including setting priorities for different workloads. To address the situation where a high-priority query is consuming too many resources, the Workload Designer can be used to adjust the priority of the workload that the query belongs to, ensuring that the impact on other users is reduced while still allowing the query to complete.
The other options are less suited for adjusting workload priorities:
Application Queries is used to monitor and manage queries related to specific applications but does not provide direct options to change workload priorities.
Query Monitor allows the monitoring of active queries and possibly aborting problematic queries but does not handle workload priority changes.
Workload Health is used for monitoring the health and performance of workloads, but it is not the tool used to modify priorities.
The Administrator has received a request to add SELECT rights on the BusinessViews database to end users, developers, and batch accounts in the accounting unit. The following roles are set up for each group:
The Administrator created the AcctShared role and will use it in a role nesting strategy to provide the required access.
Which actions can the Administrator take to fulfill this request?
The AcctShared role should be granted SELECT access on the BusinessViews database. This ensures that the role itself has the necessary privileges.
Then, you can nest this role by granting AcctShared to the individual roles of AcctUsers, AcctDev, and AcctBatch. This role nesting strategy allows the users in these groups to inherit the permissions from AcctShared without having to directly grant the privileges to each individual role.
This approach maintains a clean and efficient permission structure using role nesting.
At a large car manufacturer, huge volumes of diagnostic data for cars are collected in the following table:
The master data for each car is stored in the following table:
Many reports require data from both tables by joining via column VehicleId.
A very frequently performed query on the system returns the number of events by FaultCode and ModelType. This query consumes many CPU and I/O resources each day.
Which action should the Administrator take to improve the runtime and resource consumption for this query?
To improve the runtime and resource consumption for a query that returns the number of events by FaultCode and ModelType from the two tables VehicleEvent and Vehicle, the most appropriate action would be:
A . Use an aggregate join index with columns FaultCode, ModelType, as well as an appropriate aggregate function.
Aggregate Join Index: This type of join index will pre-join the tables VehicleEvent and Vehicle on VehicleId and store the results of frequently queried aggregations (in this case, counts by FaultCode and ModelType). It would significantly reduce the need to perform full joins and aggregations at query time, saving both CPU and I/O resources.
Option B: A sparse join index is useful for selective filtering but does not offer aggregation. Since the query involves counting (aggregation), the aggregate join index is more suitable.
Option C: Creating Non-Unique Secondary Indexes (NUSIs) on FaultCode and ModelType would help speed up searches for those columns, but it won't help with the pre-aggregation or frequent joins that are consuming the majority of the resources.
Option D: Creating separate single table join indexes for FaultCode and ModelType on different tables won't improve the performance of the aggregation and join-heavy query, because the problem stems from the frequent joins and aggregations, not just individual table access.
The Administrator is receiving complaints that a business application is taking a very long time to refresh the screen. After analyzing the WD-Report workload, the Administrator notices that several short select statements, with estimated processing time of less than 0.5 seconds, are waiting in the delay queue. The workload WD-Report is placed in Time Share Medium and managed by TIWM.
How should the Administrator solve this performance issue?
The select statements in the WD-Report workload are being delayed even though their processing times are short (less than 0.5 seconds), which is leading to slow screen refreshes.
By creating a new workload specifically for these short-running SELECT statements, the administrator can ensure that they are processed more quickly, without being delayed by other workloads.
Placing this new workload in Time Share TOP will give it a higher priority, ensuring these short queries are executed promptly, improving the responsiveness of the business application.
Other options are less effective because they either don't directly target the issue of short query delays (B), or may not appropriately prioritize these queries (A, C).
A client has a healthy system but often sees delays in some queries because of workload concurrency limits. These limits have been carefully chosen, so the client needs a solution that will not modify them.
What should the Administrator use to assist this client?
The Flex Throttle option allows the system to temporarily adjust workload concurrency limits based on system conditions. This provides more flexibility when handling spikes in query concurrency, without permanently modifying the established workload limits. Flex Throttle is ideal for handling temporary peaks in activity, helping to smooth out delays while keeping the core concurrency limits intact.
Option A (Use a system throttle) would enforce strict concurrency limits but doesn't provide the flexibility needed in this scenario, where the client is trying to avoid modifying existing limits.
Option B (Use Query Group Viewpoint portlet to change the throttle limit temporarily) suggests manually adjusting the throttle limit, which is not desirable in this case as the limits have been carefully chosen.
Option D (Use Query Monitor Viewpoint portlet to change query workloads) would involve changing the way queries are handled or prioritized but does not address the need to keep concurrency limits unchanged while still dealing with temporary delays.
Thus, Flex Throttle (Option C) provides the best solution to assist the client without altering the concurrency limits permanently.
