CPU Limits at Multiple Levels - comment by SANJI
Hi Carrie !!! Excuse me if this question is outside the scope of this discussion... From the TASM orange book... While defining an exception action for "Change WD across all operating environments ......
View ArticleCPU Limits at Multiple Levels - comment by SANJI
Another question.. does a Resource Partition CPU's limit effect the RP's relative weight calculation. Similarly would a CPU limit on an AG impact the Relative Weight within the RP % calculation &...
View ArticleElevating Parsing Priority - comment by geethareddy
hi Carrie, Is there any limit on number account strings that need to be created for one system. Currently we have one for individual user and databse (except, for DBA's Developer's, and some system...
View ArticleTASM State Changes are Streamlined in Teradata 14.0 - comment by geethareddy
hi Carrie, Thank you for the article. After reading this, I would like to ask a question on activating the rule set on specific time. We are not following any specific time to enable the rule set on...
View ArticleTASM State Changes are Streamlined in Teradata 14.0 - comment by geethareddy
hi Carrie, Thank you for the article. Q1) I have a general best practices oriented question on activating the rule set on specific time. We are not following any specific time to enable the rule set...
View ArticleEnforcement Priority: Soft, Hard, or Just Window-Dressing? - comment by...
Carrie, related to my first question, I recently heard that, with SLES 10, the priority scheduler uses Enforcement Priority (EP) and Allocation Groups(AG) to manage resources. And AG use the EP to...
View ArticleEntering and Exiting a TASM State - comment by geethareddy
Hi Carrie, As per the recommendation that i have read about these settings, for Event Management to function correctly, Workload Designer enforces the dashboard interval to be multiple of the event...
View ArticleAutomated Demotions on the Appliance: What are Query Milestones? - comment by...
Hi Carrie, When you said we can ignore the performance periods now with TASM, is this applicable for both for appliance (we are on 2690 for dev) and EDW platform (we are on 6650 for Prod). I am asking...
View ArticleStatistics collection recommendations – Teradata 14.0 - comment by carrie
Joe, Your understanding is correct as to how pre-14.0 statistics collection on multiple columns work. There are two enhancements in 14.0 that will apply here: 1. The default value length stored...
View ArticleCPU Limits at Multiple Levels - comment by carrie
Sanjeev, To answer your most recent question: The calculation of the relative weight of either a resource partition or an allocation group has nothing to do with where a CPU limit is set. The CPU...
View ArticleCPU Limits at Multiple Levels - comment by SANJI
Thank you Carrie..Appreciate you responding... Quick one though.. In the context of "a different priority scheme"... how different is it from Workload change (based on a state change) from say "A" to...
View ArticleAre AMP Worker Tasks used by FastExport in Response Mode? - comment by...
Thank You Carrie, with reference to your previous post dated - 01 Aug 2013 FastExport - AMP worker tasks are released before data begins to be returned when it is a very large data set. Could you...
View ArticleEnforcement Priority: Soft, Hard, or Just Window-Dressing? - comment by carrie
Response to your first question: Geeta, If you are using TASM, workload classification criteria alone determines the workload (and thus the priority) that a query will execute under. The...
View ArticleEnforcement Priority: Soft, Hard, or Just Window-Dressing? - comment by carrie
Response to your second question: Enforcement priority and allocation groups no longer apply only when you move to SLES 11 operating system. They only apply to SLES 10 priority scheduler. For...
View ArticleEnforcement Priority: Soft, Hard, or Just Window-Dressing? - comment by...
Fantastic! I am so glad that my puzzle has been resolved. Thank you very much Carrie. Actually I read from the DB admin manual that,"When TASM workload definition (Category 3) is enabled, the PG...
View ArticleTASM State Changes are Streamlined in Teradata 14.0 - comment by carrie
Q1: If you have to change a rule set, it is better to do at off hours or non-busy times, as explained in the text above. Q2: TDWMEventHistory table shows the events that triggered the state change....
View ArticleCPU Limits at Multiple Levels - comment by carrie
Sanjeev, I'm not sure I am understanding your question correctly. When you set up "a different priority scheme" for a given planned environment, the change in priority is implemented by means of a...
View ArticleEntering and Exiting a TASM State - comment by carrie
Not that I am aware of. I believe those choices for default interval settings were made so that they would be reasonably well-performing. Thanks, -Carrie
View ArticleAutomated Demotions on the Appliance: What are Query Milestones? - comment by...
EDW platforms with TASM and quite different from Appliance platforms. If you are have TASM on the system, then performance periods no longer have a role. The above comments from this blog posting...
View ArticleAre AMP Worker Tasks used by FastExport in Response Mode? - comment by carrie
Velu, BTEQ sessions execute standard SQL, so the AWT usage in response mode for a request within a BTEQ session is the same as described in the first part of the blog posting above: Under normal query...
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