Statistics collection recommendations – Teradata 14.0 - comment by...
Please guide me in finding solution of below problem. I want to use a query in stored procedure which should either say Yes(Y) or No(N). All I want to find whether or not STATS are collected on PI(Not...
View ArticleStatistics collection recommendations – Teradata 14.0 - comment by...
Please guide me in finding solution of below problem. I want to use a query in stored procedure which should either say Yes(Y) or No(N). All I want to find whether or not STATS are collected on PI(Not...
View ArticleStatistics collection recommendations – Teradata 14.0 - comment by carrie
Raj, When you collect stats on a volatile tables, those stats are held in the memory of the parsing engine. They are not written to the data dictionary. They can be viewed using the same methods as...
View ArticleStatistics collection recommendations – Teradata 14.0 - comment by carrie
Saurabh, Once you are on 14.0 you can query the StatsTbl in the data dictionary. The IndexID field in that table will = 1 for the primary index fields(s). There is a view on top of the StatsTbl...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Hello Carrie, We did all changes as suggested in this article, We are now in TD14.0.3 database versions and we flipped the DBScontrol internal parameter 198(DISABLETDWMSESSIONS) to FALSE so that the...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Carrie, I think I had issue in my PDCR table that showed high number of sessions. Not that I look at the session count again, the rule is working fine for allocating max of 64 sessions. But I do see...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Jana, I'm glad that you resolved the issue about the max session counts being honored. You may see fewer sessions than your session management rules specify on some load jobs if non-Teradata load...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Thanks Carrie for your response. What I researched so far is the SESSIONINFO is not getting all of the utility sessions logged though the LOGONOFF logs all sessions(matches to viewpoint). Its so weird...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Also the jobs where I am seeing lesser sessions are actually from the same client running 13.10 TTU and hitting TD14 database. Like I explained above its a logging issue, I even scanned the ETL JOB LOG...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Jana, The SessionInfo view only shows currently logged on sessions. All utility sessions are logged in the DBC.EventLog which is also accessible via the DBC.LogonOff view. Normally, there should be...
View ArticleTeradata 13.10 Statistics Collection Recommendations - comment by surup.sarit
Hi Carrie, I am in trouble .I am declaring the collect statistics on column level .Below is the syntax is working for TD14.0 ,but is not working for the TD13.0 . Collect statistics using system sample...
View ArticleTeradata 13.10 Statistics Collection Recommendations - comment by surup.sarit
Hi Carie, Could you please tell me whether the syntax of TD 14.0 will work in TD13.0
View ArticleTeradata 13.10 Statistics Collection Recommendations - comment by carrie
Surup, You cannot use the new 14.0 collect statistics syntax on a database with earlier software, such as 13.10. It will not be recognized. Here is an example of the legacy style syntax,...
View ArticleEliminating Unplanned Delays Within Load Utility Jobs - comment by JanaDevX
Hello Carrie, 1. I am a little confused with the picture showing that the 'write to restart log' sqls getting classified into the wd-short-qry and what was explained above "Subsequent statements of the...
View ArticleAutomated Demotions on the Appliance: What are Query Milestones? - comment by...
Hi Carrie I wonder if you can tell us how IDs with the account string "DBC" are handled under this scheme on Appliances? It seems that such accounts include the users DBC, TDWM, and Viewpoint. What...
View ArticleAutomated Demotions on the Appliance: What are Query Milestones? - comment by...
Hi Ricky, By default, all requests will run in $M (allocation group 2) on the appliance unless their user's account string has been modified to point to one of the other performance groups. You...
View ArticleEliminating Unplanned Delays Within Load Utility Jobs - comment by carrie
Jana, An auxiliary session is not required as part of a load utility job, although most Teradata utilities do support that option. But if you use an auxiliary session it will not be part of the...
View ArticleStatistics collection recommendations – Teradata 14.0 - comment by ksn
Hi, Will TLE,stats collected(from production) influence the optimizer to choose the same plan on a test system loaded with test data(for which I have not collected stats). Thanks, KSN
View ArticleStatistics collection recommendations – Teradata 14.0 - comment by carrie
Target Level Emulation mimics the customer environment by capturing such detail as DDL, stats, RAS, cost profiles, DBS Control detail, etc. from one system and then placing that detail on another...
View ArticleIndex Maintenance During Mini-Batch Processing - comment by Raja_KT
Hi Carrie, Thanks for clarifying. I am planning to architect the staging.---- So first I will fastload the data (from a unix file say) to a staging non-partitioned NoPI table as it avoids the hash...
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