Statistics collection recommendations – Teradata 14.0 - comment by escueta
Hi, I'm just new to Teradata and my background is Oracle. When collecting Statistics in Teradata, after setting up a table for stats collection, do I need to have another script to refresh the stats on...
View ArticleNew opportunities for statistics collection in Teradata 14.0 - comment by carrie
Hi Nazy, On 14.10 (and 14.0 as well) you no longer need to collect statistics on PARTITION, unless your table is a partitioned table. For partitioned tables you should definitely collect on...
View ArticleStatistics collection recommendations – Teradata 14.0 - comment by carrie
Hi Chris, You don't really "set a table up" for stats collection, you just decide which stats you wish to collect and then build a script with collect stats statements for those columns or indexes and...
View ArticleMore on ResUsageSAWT When Collection and Logging Rates Differ - comment by LUCAS
Carrie, what about AWT analysis in V14.10 ? CollectIntervals column does not exist any longer, so i wonder wether another column is superseding the old one, or the difference between Log Time and...
View ArticleMore on ResUsageSAWT When Collection and Logging Rates Differ - comment by...
Hi Pierre, Starting in 14.0 and up, there is no longer a CollectIntervals column in any ResUsage table. In the ResusageSAWT table, MailBoxDepth and WorkTypeInUse00-15 are now track fields and no...
View ArticleReserving AMP Worker Tasks? Don’t let the Parameters Confuse You! - comment...
Hi Carrie, If you are using TASM, then the expedited status is automatically given to a workload that has a tactical enforcement priority We have two versions of Teradata ie Teradata 12 and Teradata...
View ArticleReserving AMP Worker Tasks? Don’t let the Parameters Confuse You! - comment...
For TASM in Teradata 12 it is not enough to set the enforcement priority to tactical. You must explictly expedite the allocation group. This is done in the GUI screen that shows all the workload...
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Don’t confuse SLES11 Virtual Partitions with SLES10 Resource Partitions -...
Cover Image: Because they look like just another group of workloads, you might think that SLES11 virtual partitions are the same as SLES10 resource partitions. I’m here to tell you that is not the...
View ArticleReserving AMP Worker Tasks? Don’t let the Parameters Confuse You! - comment...
Good Night! How do I download the Teradata database express to install? tks
View ArticleChanges to the TASM AMP Worker Task Event in Teradata 13.10 - comment by...
Carrie, As per your last comment, "Usually, each AMP will use from 1 to 2 tasks to support it's work on behalf of one request" If we issue a multi statement request involving selects from different...
View ArticleChanges to the TASM AMP Worker Task Event in Teradata 13.10 - comment by carrie
Lakshimi, You are correct that parallel steps can result in more than 1 or 2 AMP worker tasks being used by a single request, particularly if it is multistatement request. But even with multiple...
View ArticleTips on using Sampled Stats - comment by Santanu84
Hi CarrieYour blog is really helpful. I have a question, does sample stats work with aggregate functions as well? If not then full stat coll. will be required? Also if a table has almost 5m data and...
View ArticleChanges to the TASM AMP Worker Task Event in Teradata 13.10 - comment by...
Thanks for the infomation provided Carrie. It really helps me understand AWT's better.
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by YL185019
Hi Carrie, Thank you for this article. I have a question about workload hard limits: per KAP314ACE6,<http://pc02.td.teradata.com/__8525621800464274.nsf/0/98724B709BDEF31685257C07006E9184> we can...
View ArticleTips on using Sampled Stats - comment by carrie
Santanu, If you are asking if using can use sampling when you collect statitics on an expression (whether aggregate or not), the anwer is yes, sampling for stats on expressions is supportable....
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by carrie
Virtual partition hard limits and workload level hard limits in SLES11 will be available at the same time a WM COD is available. All three levels of hard limits are bundled into a single feature in...
View ArticleExpediting Express Requests - comment by rasikatyagi
Hi All, We are using Teradata Studio Express Version: 14.10.01.201310271204. When we execute a single statement, it pops up message "Result set contains at or over 2,000 rows.Cancel at 2,000 rows in...
View ArticleExpediting Express Requests - comment by carrie
Rasika, I have never used Teradata Studio Express. I think you may have posted this question on the wrong blog. Sorry I cannot help you. You could try posting your question on Teradata Forum....
View ArticleExpediting Express Requests - comment by vinodraj
Hi Rasika,'Max Display row Count' is set to 2000 by default in preference. You can increase your limit accordingly. Check out 'Max Display row Count' variable under following locationPreference ->...
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by YL185019
Hi Carrie, Thank you very much. Best Regards, Yanmei
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