Easing Into Using the New AutoStats Feature - comment by csbandi5426
Hi Carrie, We have successfully setup statsmanager portlet on our site and start implementing collect jobs. Can you advise on archiving the TDSTATS database ,statsmanager user setup. I read the manual...
View ArticleEasing Into Using the New AutoStats Feature - comment by csbandi5426
Hi Carrie, Can you please advise on my question when you get a chance. Thank you. Regards Chandra.
View ArticleEasing Into Using the New AutoStats Feature - comment by carrie
Chandra, I have been trying to find someone in engineering who knows what the answer is. When I am able to get a response, I will post it here. Thank you for the reminder. Best regards, -Carrie
View ArticleEasing Into Using the New AutoStats Feature - comment by csbandi5426
Thank you very much Carrie for the help!!. Regards Chandra
View ArticleEasing Into Using the New AutoStats Feature - comment by carrie
Chandra, Below are the responses I was able to get to your questions: YOUR QUESTION: Can you advise on archiving the TDSTATS database ,statsmanager user setup. I read the manual and it says above...
View ArticleEasing Into Using the New AutoStats Feature - comment by csbandi5426
Thank you very much Carrie for taking time to follow-up and answer my questions. Regards Chandra
View ArticleEasing Into Using the New AutoStats Feature - comment by csbandi5426
Hi Carrie, I have automated stats on one of our core database. Completed two runs and it is collecting complete stats and not skipping any stats. To recollect/skip stats, syschange threshold depends on...
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by...
Hi Carrie, We have two virtual partitions - prod and non prod. The prod has all prod IDs and non Prod has all UAT/Dev ids. In resource partition, i see that 85% is given to prod and 15% to non prod. In...
View ArticleEasing Into Using the New AutoStats Feature - comment by csbandi5426
Hi Carrie, We have primary and DR production systems. I am looking to see any options on copy stats from one prod system to another system since same tables exists both and in sync. Can you please...
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by carrie
Samir, Just to be sure that I understand what you mean when you say " In workload distribution, i see that we have only tactical and timeshare defined" Are you talking about the Prod or Dev virtual...
View ArticleEasing Into Using the New AutoStats Feature - comment by carrie
Response to the comment from 2 days ago: Chandra, The amount of time before skipping will be considered by the optimizer depends. The optimizer usually looks for at least 5 history records in the...
View ArticleEasing Into Using the New AutoStats Feature - comment by csbandi5426
Thank you very much Carrie!!. We are currently on Release 15.00.04.05 . We recenlty started stats collection using statsmanager on prod system and started with one database to check the runtimes and...
View ArticleNew opportunities for statistics collection in Teradata 14.0 - comment by...
Thanks For the clarification on ROWID...... I have another question. In the original blog you have the explanation below. Could you please expand eon this? I am not sure I quite understand where...
View ArticleEasing Into Using the New AutoStats Feature - comment by carrie
Chandra, USECOUNT logging is not just used for skipping stats. It is also used for statistics extrapolation. You will not get skipping if USECOUNT logging is off, and the extrapolations if stats...
View ArticleNew opportunities for statistics collection in Teradata 14.0 - comment by carrie
Hi Nazy, The 32 bytes I mentioned is not directly related to MAXVALUELENGTH. MAXVALUELENGTH only applies to the number of characters that are stored in the histogram intervals value fields at the...
View ArticleNew opportunities for statistics collection in Teradata 14.0 - comment by...
Hi Carrie, Thanks for the explanation... We sometimes have tables with several multicolumn stats having the same number of unique values. In this example: collect stats column (A,B) on tableA;...
View ArticleEasing Into Using the New AutoStats Feature - comment by csbandi5426
Thank you Carrie!! I will go ahead and enable USECOUNT logging on all required permanent databases to make use of it on DR system as well. Our latest collect job run after we enabled USECOUNT logging...
View ArticleNew opportunities for statistics collection in Teradata 14.0 - comment by carrie
Hi Nazy, If you don't collect stats for each separate combination, then there will no histogram where the optimizer can see the number of uniques and the interval values. So if you are using those...
View ArticleConverting CPU Seconds, Old Node Type to New Node Type - comment by carrie
Geeta, The definitions you show below for CPUUServ and CPUUExec are taken from the ResUsageSPMA table (Chapter 6 in the ResUsage manual), which reports node-level metrics. They are not taken from the...
View ArticleIf You’re Not Collecting Statistics on Your Dictionary Tables, Do It. Now. -...
Lakshminiarasu, When you use the diagnostic help stats command, you may get more suggestions for statistics collections than you actually need. Unfortunately, it's difficult to know if the columns...
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