Teradata Basics: Parallelism - comment by carrie
Mukal, Could I ask in the future that you post questions and/or comments under blog postings that are relevant to the topic you are asking about? It can get confusing to anyone reading a blog when...
View ArticleAutomatic Throttles in Teradata 14.0 and 14.10 - comment by carrie
Teraboy, There are a couple of questions here. 1.) The most likely reason you received that error message regarding a ruleset version not being compatible is that the "Working" ruleset in Viewpoint...
View ArticleAutomatic Throttles in Teradata 14.0 and 14.10 - comment by TERABOY_DBA
Carrie. Thanks for the tip. Since my existing ruleset is no longer compatible to Teradata 14.10 version, could I just delete it and create a new one? Thanks
View ArticleAutomatic Throttles in Teradata 14.0 and 14.10 - comment by carrie
Yes, you can do that. Thanks, -Carrie
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by LUCAS
Hi Carrie, very interesting and clear ! can you help me to make the good relation between Workloard group assignment to Timeshare levels and Priority inherited from a PROFILE definition of...
View ArticleHow Resources are Shared in the SLES 11 Priority Scheduler - comment by carrie
Pierre, The mapping of a query to a workload will be determined by two things: 1. The classification criteria defined on the workload 2. The session and query characteristics If the Timeshare Low...
View ArticleA Closer Look at How to Set up a Parsing-Only Workload - comment by geethareddy
Hi Carrie, We recently introduced the PE-Only Workload (POW) on a special system (14.10+SLES10) to have all user PE-work to be classified into that POW. We have followed the criteria shown below,...
View ArticleUsing IOTAs to Determine the I/O Utilization of Your Workloads - comment by...
This is what information we have recevied about IO throughput about our appliance . 2650 Node IO ThroughputMB/SecIO Intense - Queries/80% Reads, 20% Writes283IO Intense - All Writes169IO Intense -...
View ArticleA Closer Look at How to Set up a Parsing-Only Workload - comment by carrie
Geeta, Try redefining the POW workload classification without the Profile=* part. Unless you are 100% sure that all your users have profiles, it could be problematic in this case. Just to re-iterate...
View ArticleA Closer Look at How to Set up a Parsing-Only Workload - comment by geethareddy
Actually, we tried this criteria (where we used exactly same dummy characteristics as shown in your screenshot) on only single UserID which was reporting higher Parser Time. But it was not making use...
View ArticleA Closer Look at How to Set up a Parsing-Only Workload - comment by carrie
Geeta, I am sorry you are still having problems with this. I'm still somewhat concerned about your dummy classification on query characteristics. You want to make the query characteristics...
View ArticleA Closer Look at How to Set up a Parsing-Only Workload - comment by geethareddy
Carrie, Finally the criteria below making the POW to be recorded in SessionWDID. And I am trying to understand the extreme impact of including PROFILE *. We have every user on the system assigned to a...
View ArticleUsing IOTAs to Determine the I/O Utilization of Your Workloads - comment by...
I don't have the background or experience to help you interpret these metrics. I do know that I/O throughput for a node will be dependent on many factors, including the read/write percentage, raid...
View ArticleA Closer Look at How to Set up a Parsing-Only Workload - comment by carrie
Geeta, If you are sure that every user has a profile, then there is no down side of including Profile = * in your classification. It is only a problem if a user has no profile. In that case, any...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Could you tell me if TPT Stream operator would occupy Utility Slots?
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
TPT Stream will not use a utility slot. TPT Stream operator and it's predecessor, TPump, use SQL-based load approaches and therefore do not tie up resources to the degree that TPT Load (FastLoad) or...
View ArticleA Closer Look at How to Set up a Parsing-Only Workload - comment by geethareddy
Thank you. With that classification on all the users (via Profile*), we are seeing multiple issues (like same session id using POW and other Workload for parsing phase under SESSIONWDID), working with...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
Thanks Carrie for the article. We have a very peculiar problem. We are using TD14.10. We have system level throttle for TPT Multiload and is 15. We are trying to run 7 MLOAD through TPT concurrently...
View ArticleUtility Session Management - It's Inside the Database in Teradata 13.10!...
If you mean that you have a system utility throttle for TPT Update jobs (MultiLoad), but some sessions are being delayed, first find out what throttle is causing the delay. Some sessions within a load...
View ArticleStatistics Collection Recommendations – Teradata 14.10, 15.0 and 15.10 -...
Carrie, Can we run collect stats when a table is being insert/update or vice versa? Is there any performance issue occur? Does it impact users who accesses those table on above situation? Thanks, Dinesh
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