How Resources are Shared in the SLES 11 Priority Scheduler - comment by sghanw
Thank You for your explanation, really appreciate it. During Batch window SLG Tier has 85% global weight with all 4 workloads in SLG Tier 1 and no other levels present, there are no Tactical workloads...
View ArticleStatistics Collection Recommendations – Teradata 14.10, 15.0 and 15.10 -...
Question #1: I am not sure that I understand question #1: "Once we enable this skip process does 10% of change in data holds any value?" The way it works is you don't enable the skip...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Hi Carrie I've found the information in this post extrememly helpful, but I do have a question regarding limiting sessions for the TPT Stream Operator. We are on a 4 node 2750 appliance...
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by carrie
Sachin, Are you saying that all 4 workloads on SLG Tier 1 in combination have a global weight of 85%? And that Timeshare workloads will share a global weight of 15%? And can I assume that all the...
View ArticleEasing Into Using the New AutoStats Feature - comment by br230015
Hi Carrie, Recently, we swap a system from TD 13.10 to 15.00 and we are collecting stats on CDR table which have BLC and unable to collect stats on the table. It taking long time and we can't say when...
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by sghanw
Thank You Carrie, i will go through Orangebook's IO section.
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Mark, The number of sessions used by an Informatica TPT API Stream workflow should be able to be set in the definition of the Stream connection. I don't have direct experience in this area, but I...
View ArticleEasing Into Using the New AutoStats Feature - comment by carrie
Lots of things change when you go from 13.10 all the way to 15.0. So there is no simple answer to any question involving a change in performance. You did not say if the CDR data was uncompressed in...
View ArticleStatistics Threshold Functionality 101 - comment by laeeq.ahmad@teradata.com
Hi Carrie, Great informative article. I am trying to find what are the default system settings [when does the system decides to collect stats ? ] In DBS control, everything by default is set to 0 DBS...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Thanks very much Carrie - I'll pass this on to the Informatica Team.
View ArticleNew opportunities for statistics collection in Teradata 14.0 - comment by saif
Hi Carrie, I have a question. Creating new stats on modified table or copying the stats from existing table will it make any difference for time perspective? Here New stats which I am creating is...
View ArticleTwo Levels of Concurrency Control for Load Utilities in Teradata 13.10 -...
Hi Carrie, Are the sessions in RESPONDING state considered for the Utility Throttle? Does the sessions in RESPONDING state have any impact on the delay queue due to TASM throttles? Please confirm....
View ArticleStatistics Threshold Functionality 101 - comment by carrie
Laeeq, The default settings are all zeros, your information below is correct. The first two parameters are described above in the blog posting under the heading. More about...
View ArticleNew opportunities for statistics collection in Teradata 14.0 - comment by carrie
If you wish to copy the statistics that already exist on table_A to a new table that is identical to table_A, call it table_B, the fastest and easiest way to do this is to export the stats from table_A...
View ArticleTwo Levels of Concurrency Control for Load Utilities in Teradata 13.10 -...
A utility throttle evaluates and considers delaying a utility job at the CHECK WORKLOAD END statement. CHECK WORKLOAD END is an SQL statement that procedes the utility logon. If a utility job is...
View ArticleStatistics Threshold Functionality 101 - comment by laeeq.ahmad@teradata.com
Thanks Carrie. You almost covered which i asked. Cheers :) Laeeq -
View ArticleNew opportunities for statistics collection in Teradata 14.0 - comment by firstj
Carrie Just wanted to check whether there is a need to use the key word TEMPORARY when collecting stats on GLOBAL TEMPORARY tables under V14.0 onwards? COLLECT STATISTICS INDEX ( COLUMN1,...
View ArticleNew opportunities for statistics collection in Teradata 14.0 - comment by carrie
If you want to collect statistics on the instance of a global temp table within your session, you would need to include the word TEMPORARY. If you do not include TEMPORARY, then stats will be...
View ArticleDatabase Tasks that Run on the Parsing Engine - comment by HarshaKudumula
Hi Carrie, Thanks always for the valuable information. As per my understanding, the ideal parsing time for any query on normal system should always be equal or less than 30 Seconds. Please correct me...
View ArticleRecommended Dictionary Statistics to Collect in Teradata 14.0 - comment by...
COLLECT STATISTICS COLUMN (SUBSTRING((TRANSLATE((TVMName )USING UNICODE_TO_LOCALE WITH ERROR )) FROM (1) FOR (30 ))) AS ST_200113065866_0_tvm ON DBC.tvm COLLECT STATISTICS COLUMN...
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