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Viewpoint alert for PJI
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Aborting idle session of t particular user
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Impact CPU
Actual value of impact CPU and its value displayed in Viewpoint are always different. is there is any way to find out the actual value from viewpoint.
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CPU Utilization
Some times we will see that CPU utilization was more than 99%. How this percent was decided and when its value become 100%.
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Is there a way to pull Lab Group owners other than a portal
Hi All,
I have a requirement to setup alert mechanism to send a notification to Lab Group Owner if the space in the Lab Group reaches the threshold limit. Is any one aware on how to pull the Lab Group owners other than using a Portal?
Thanks,
Harsha.
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Viewpoint showing 'no data' for Disk Space
We are observing "no data" for Total Statistics Portal under Monitoring Tools in View point for one of our production Teradata servers .Why is it showing like this, even when we have ~ 4 PB of system space. Is there any way we can figure out if something is wrong and correct it?
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System health status and heartbeat query threshold response time
Per this article:
http://developer.teradata.com/blog/stever/2011/08/understanding-the-system-health-equation
"A Teradata Database system is considered DOWN in the health equation if any of the following conditions occurs:
- A canary query is enabled in the health equation and returns an error (such as a SQL parse exception or login failure).
- The System Heartbeat canary query is enabled in the health equation and fails to complete in under 60 seconds.
- Any other canary query is enabled in the health equation and fails to complete in under 30 minutes."
Is there any way to change the maximum allowed response time on the System Heartbeat canary query (sel * from dbcinfo)? We've seen a few instances where we received "health down" alert for the heartbeat query when the system isn't actually down. Sometimes other system conditions (which we'd like to alert on separately) do cause a heartbeat response of greater than 60 seconds, triggering the "health down" alert. We want to increase this value to something that would raise the likelihood that the system is actually down when we receive the alert. For sake of example let's say 120 seconds. So: Can we do this? And if so, where?
Viewpoint 14.10
Thanks,
Dan
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ARCMAIN job
I am running an arcmain data copy, I see something like below in the arc/copy log file:
05/17/2015 20:13:00 ARC HAS REQUESTED 4 SESSIONS, TASM HAS GRANTED IT 38
SESSIONS
Just wanted to know where can I see the above setting when TASM is granting more sessions than requested in the arcmain job.
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Abort sessions in responding phase
Hi,
I have a question regarding the viewpoint alert setup. I have noticed that there are some sessions that are in "not idle" queue for a long time (say 1+ days). When i go to the sessions, i see that the query is on "responding" state and doing nothing. I want to set up an alert to send an email to dba team and abort them. What is the alert that i should choose here - active time, connection time etc ?- this is the closest that i can see. I checked the viewpoint user guide. Unfortunately, that doesn't give details on the detail meaning of these.
--Samir
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Very long running queries impacting performance due to frequent re-classification
We have a relatively large datawarehouse (V14.0 Viewpoint V14.10 SLES 10).
We have a problem with certain types of query and certain source tables that causes us tremendous problem with regards system delays.
The queries are characterised by the source tables being quite large in terms of rows (1 billion rows+) and an OLAP fuction being used in the query. The execution plan states that the estimated time qualifies the query to go into the SHORT workload but very quickly the CPU used causes the query to be reclassified first to MEDIUM and then LONG and sits there for over 40 minutes, effectively blocking legitimate LONG queries. Statistics are current and valid.
The other instance where very quick reclassification following a mis-classification happens is when a very wide table (2000 columns) is referenced. We are aware that the design of the table is poor but the same problem occurs.
So my question is. Is there any possible way we can implement an exception/throttle to protect the system from this behaviour?
We are due to move to TD 14.10 or 15.0 in the near future and that will include an upgrade to SLES 11 but in the meantime any sggestions would be welcome.
Nick
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For Testing/learning
Hi,
Is there any way how we can make our system as viewpoint server, in order to learn and get hands-on on viewpoint.
I believe we have vmware for Teradata DB. Do we have something for viewpoint.
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Definition of 'Active Time' seconds in Session Alert
I setup an alert to abort queries running over 30 minutes. The settings are 'Alert Rules' = All, 'Active Time is greater than 1800 seconds', 'Alert Action' = 'Abort Session'. Viewpoint abort the session after less than 1 minute. Does the 1800 seconds represent elapsed time or CPU time?
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Not able to view SQL explain in Query monitor
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Set a Maintenance Window
Are there plans to be able to set a maintenance window via Viewpoint? If so, what version? Thank you!
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System Default Utility Limits
Hi there,
I not have defined specific Utility Limits on one of our system, so I'm using the default system utility limits i.e.
System Default Utility Limits
UTILITY TYPE
LIMIT
UTILITY TYPE
LIMIT
FastLoad or MultiLoad
30
FastLoad or MultiLoad or FastExport
60
FastLoad
30
MultiLoad
30
FastExport
60
Backup Utilities (ARC/BAR)
350
My question is what happens when the system limit is hit when using TASM to manage sessions/utilities i.e. do new jobs go to the delay queue or are they rejected (i.e. as would have happened if MaxLoadTasks was active)?
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Actual time & Actual Rows in Query Monitor
A query with 25 steps shows actual time & rows only for the first 20 steps. The last 5 steps are always empty ie not filled though the query completes successfully. Is it a bug or feature?
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Multiple idle sessions for 'viewpoint'
Good morning,
Our production system is monitored by a different viewpoint server that our dev/test system.
I often see multiple sessions for user 'viewpoint' and some sessions will be idle for several days. This morning, I noticed two sessions that have been idle for over 30 days.
Can anyone explain why that is and if it is okay to abort those sessions?
Thank you
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On the Productivity Portlet the QPH calculation at times seems exceptionally high can you explain why that is?
We just upgraded to Viewpoint 15.10 and I started using the Productivity portlet. WHen I choose to monitor a particular user/session there are times that it gives me QPH (queries per hour) that seem to be unrealistic, while at other times it seems quite normal.
What is it really counting? If we initiate a query that is doing an all amp query does the QPH get multiplied by the number of amps on the system?
Thanks in advance.
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Roles of DBA in viewpoint v14.10.00.03
What are the important points DBA needs to follow while monitoring teradata viewpoint v14.10.00.03?
Thanks in advance
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Understanding REQ CPU in Query Spotlight
Hi ,
for one of query total duration is 00:08:21 , but its showing REQ CPU as 986.16.
as pef user manual
REQ CPU
Number of CPU seconds needed to run the query
that means 986.16 seconds i.e 16.436 minustes. but query duration itself 8 minuts 21 secods , how come its possible ,experites can you please clear my doubt.
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