By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
This is my question we have iSeries 820 V5R2MO operating system. The system value for QPFRADJ is set to '2'. Can this help by changing it to '3'?
Each time you perform an initial program load (IPL) and periodically thereafter, the system examines the machine configuration, jobs running on the system, storage requirements, and so on, and makes performance adjustments to achieve effective utilization of system resources.
The system periodically examines the machine configuration, jobs running on the system, storage requirements, and so on, and makes performance adjustments to achieve effective utilization of system resources.
Note: Performance adjustment at IPL does not take place.
If you only IPL once a month, the changes made at IPL time will most likely be overridden rather quickly by the dynamic adjustment feature associated with QPFRADJ=3. So what is the advantage? Probably not much.
What I do is set QPFRADJ to 3 and then as part of my backup process I execute CHGSHRPOOL commands to allocate resources to favor the submitted batch BU processes that run in the evening. After backups finish, I allocated memory back into the interactive memory pool in order to prepare for user sign on processes in the morning. I then let dynamic performance tuning take care of resource allocation during the day. This works quite well for me.
MORE INFORMATION ON THIS TOPIC
Ask the Experts yourself: Our backup & recovery gurus are waiting to answer your questions.
Search400.com's targeted search engine: Get relevant information on backup & recovery.
Check out this Search400.com Featured Topic on 30 backup/recovery tips in 30 minutes .
Dig Deeper on Data backup, storage and retrieval on iSeries
Related Q&A from Ken Graap
The BRMS Network feature allows a BRMS system to connect to other BRMS systems via a network, and enables a user to consolidate media such as backup ...continue reading
The only option to correct damage preventing file journaling is to use the RCLSTG command.continue reading
Find out if log files can be omitted during a save without causing problems in a full restore.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.