Search found 25 matches
- Sat Apr 13, 2013 1:40 pm
- Forum: Vertica Tips, Lessons and Examples
- Topic: Storage Policies in Vertica 6.1 and Beyond
- Replies: 1
- Views: 20804
Re: Storage Policies in Vertica 6.1 and Beyond
Excellent one !
- Wed Mar 20, 2013 11:53 pm
- Forum: Vertica Performance Tuning
- Topic: Are Bind Variables Relevant in Vertica?
- Replies: 2
- Views: 8286
Re: Are Bind Variables Relevant in Vertica?
Hi , I don't think so. Vertica is for BI and DWH and not for OLTP Bind variable are not suited for Vertica. Oracle use binds in order to keep the shared pool from exploding. Even in Oracle when you are using it for BI and DWH it's better NOT to use binds ( as long as the number of queries will be re...
- Sat Feb 02, 2013 10:43 am
- Forum: Talend
- Topic: Vertica SCD Component Performance Issues
- Replies: 2
- Views: 19287
Re: Vertica SCD Component Performance Issues
If you are using updates a lot then I can tell you that we are suffering from performance issue on our updates ( part of it is our fault as we took Oracle code and use it in Vertica) and we are getting 4 updates/sec on a simple dimension . From my experiences Updates are not performing well in Verti...
- Thu Jan 31, 2013 3:56 pm
- Forum: Vertica Performance Tuning
- Topic: Loads into pre-join projections of 2 fact tables don't scale
- Replies: 6
- Views: 15447
Re: Loads into pre-join projections of 2 fact tables don't s
Julie wrote:FYI ..
Basically, insert statements suck in Vertica
If you still want to use inserts, we found that separating the inserts on different nodes so that they run in parallel helped with performance.
This is interesting as Updates also sucks ....
![Smile :-)](./images/smilies/icon_e_smile.gif)
- Wed Jan 23, 2013 9:30 am
- Forum: Vertica Performance Tuning
- Topic: How to optimize
- Replies: 6
- Views: 29333
Re: How to optimize
Hi , ** your query isn't valid ( where needs to be before the group by ) First try to partition base on the pay_date column or function on this column so it will create daily or monthly partitions and as a result Vertica will use partition pruning and won't scan the entire table . Second create a pr...
- Fri Jan 18, 2013 3:43 pm
- Forum: New to Vertica Database Administration
- Topic: WOS Overflow
- Replies: 4
- Views: 9562
Re: WOS Overflow
As jpcavanaugh wrote you can control the amount of ram wos is using by changing the wosdata resource pool.
You can also change the time of the moveout process so it will move the data from wos to ros more frequently.
You can also change the time of the moveout process so it will move the data from wos to ros more frequently.
- Wed Jan 09, 2013 7:54 am
- Forum: Vertica Upgrade
- Topic: Vertica Upgrade v5.0.8 to v6.1
- Replies: 3
- Views: 20620
Re: Vertica Upgrade v5.0.8 to v6.1
Hello, I'd recommend following the upgrade paths as indicated in the docs! In your case, most likely: Vertica 5.0 to 6.0 Vertica 6.0 to 6.1 Each step can be completed in less than 15 minutes each... You may be used to the old back up methods. From the docs: With Release 5.1, Vertica introduced new ...