Easing Into Using the New AutoStats Feature - comment by carrie
You are correct. Autostats uses tableIds to join it’s infrastructure (tdstats repository) with the dictionary. Thanks, -Carrie
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by carrie
Setting a service level goal (SLG) is an option within workload management. You are not required to set a service level goal for a workload, and it may not make much sense for most appliance...
View ArticleAMP Worker Task Resource Limits & Increased Load Limits for MLOADX - comment...
Hi Carrie, As mentioned, in the 14.10/15.0 timeframe, MLOADX responds to workload management rules similarly to legacy MultiLoad, does it mean that its better to use this when we move to 15.10(we are...
View ArticleReserving AMP Worker Tasks? Don’t let the Parameters Confuse You! - comment...
Hi Carrie, Thank You for sharing above information, it is really helpful. I need your help, Do we have any query to identify to which AMP/Node the Parser Express Request Goes usually ? Is it one...
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by nagad
Thanks Carrie :) i have already refered to this articel , but my understanding is not clear so when we set SLG to workload exspecially in timeshare workloads how the resources will be allocated to...
View ArticleAMP Worker Task Resource Limits & Increased Load Limits for MLOADX - comment...
Hi Samir, First, only the TPT Update supports MLOADX. Standalone MultiLoad does not support MLOADX. Second, in the default setting, the user just submits a TPT Update job and the system (DBS...
View ArticleReserving AMP Worker Tasks? Don’t let the Parameters Confuse You! - comment...
Hi Sachin, An express request is usually issued in order to get particular information from the data dictionary, such as to validate the columns in a table that the query uses, or to get a user's...
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by carrie
Hi Naga, A service level goal (SLG) is only for reporting purposes, so you can compare actual performance against your goals. It is optional. It sounds like you were under the impression that...
View ArticleStatistics Threshold Functionality 101 - comment by sk6752
Carrie, Thanks for great info. In 14.10, Will optimizer do system sampling when System Threshold option (SysChangeThresholdOption = 0) and Usecount logging is turned on ? Should System Threshold...
View ArticleEasing Into Using the New AutoStats Feature - comment by nagad
Hi Carrie, Is it possible to lauch auto stats collect jobs using autostats APIs from shell wrapper bteq scripts. I couldnt find detail info about precollect,runcollect,runcollectreport procedures in...
View ArticleReserving AMP Worker Tasks? Don’t let the Parameters Confuse You! - comment...
Thank You Carrie, In our environment, we are observing high Parser Express Request ( > 100sec) for some time of the day. Shall we go with reserve AWT(expedite as mention in above article) or any...
View ArticleStatistics Threshold Functionality 101 - comment by carrie
If you want the system to consider downgrade to sampling, you have to turn off the system threshold option. As you say you have found out by trying it, if SysChangeTresholdOption is on, the optimizer...
View ArticleEasing Into Using the New AutoStats Feature - comment by carrie
Naga, The AutoStats APIs are implemented as stored procedures and are documented in the Application Programming Reference in the chapter entitled “Automated Statistics Management API”. Customers can...
View ArticleReserving AMP Worker Tasks? Don’t let the Parameters Confuse You! - comment...
Sachin, You can consider applying the suggestions in my blog posting titled: " Expediting Express Requests". You have to reserve at least two AWTs in the tactical reserves for express requests to use...
View ArticleStatistics Threshold Functionality 101 - comment by sk6752
Carrie, Thanks for the explanation.
View ArticleExpediting Express Requests - comment by kqn1
Thanks for your previous response. I do appreciate the additional details provided. I have a couple follow-up questions regarding the EnableExpediteExp setting. 1) Let's say we set this...
View ArticleStatistics Collection Recommendations – Teradata 14.10, 15.0 and 15.10 -...
Hi Carrie, I am using Teradata 14. Can I get a list of stats recommended for all my tables in my database. If yes can you please hint me on the query we can use to check that. Appreciate your help....
View ArticleExpediting Express Requests - comment by carrie
A change to the EnableExpReq does not require a restart. You don't "throw a workload at it" because the EnableExpReq setting is applied universally, it is not targeted to individual workloads. Once...
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