Re: Ofbiz with MySQL or PostgreSQL
It can also be a problem in tables like InventoryItemStatus or basically anywhere in the system that depends on being able to retrieve the latest record when it's possible for two records to have been created within the same second. Also anywhere that depends on a timestamp as part of the primary key and possible that similar records will be created within the same second (ProductAverageCost is another one like ServerHit). And in general losing that millisecond precision can make it difficult at times to know the order in which a set of actions took place when looking through the data. Regards Scott On 24/06/2012, at 2:10 PM, Brett Palmer wrote: The only place I have found this to be a problem is in the server hit entity. The server hit functionality is configurable. We disable that functionality. We write custom applications using the ofbiz framework and don't do a lot of ecommerce apps so its not a problem for us. Brett On Jun 22, 2012 11:48 PM, Sanjeev Gupta subscr...@sanjeevg.com wrote: Thanks Bertt How do you manage with the timestamp problem mentioned by Ruth. SkipDever Is replication native in 9.1 or though add-on components ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633954.html Sent from the OFBiz - User mailing list archive at Nabble.com.
Re: Ofbiz with MySQL or PostgreSQL
As Scott mentions there are many parts of the OFBiz data model (and associated business logic) that use a Timestamp within database tables/entities as a primary-key. Another example: If you are using any of the content management logic (blog, content publication and RSS feed come to mind) you could have issues. Even business logic as seemingly trivial as allowing a user to have multiple shipping addresses (see the PartyContactMechPurpose entity) is effected since a Timestamp is used as part of the fields that make up the primary-key. FYI - I've seen this one in action. It wasn't immediately obvious what was going on until I looked directly in the database and saw the data. Regards, Ruth On 6/25/12 10:12 AM, Scott Gray wrote: It can also be a problem in tables like InventoryItemStatus or basically anywhere in the system that depends on being able to retrieve the latest record when it's possible for two records to have been created within the same second. Also anywhere that depends on a timestamp as part of the primary key and possible that similar records will be created within the same second (ProductAverageCost is another one like ServerHit). And in general losing that millisecond precision can make it difficult at times to know the order in which a set of actions took place when looking through the data. Regards Scott On 24/06/2012, at 2:10 PM, Brett Palmer wrote: The only place I have found this to be a problem is in the server hit entity. The server hit functionality is configurable. We disable that functionality. We write custom applications using the ofbiz framework and don't do a lot of ecommerce apps so its not a problem for us. Brett On Jun 22, 2012 11:48 PM, Sanjeev Gupta subscr...@sanjeevg.com wrote: Thanks Bertt How do you manage with the timestamp problem mentioned by Ruth. SkipDever Is replication native in 9.1 or though add-on components ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633954.html Sent from the OFBiz - User mailing list archive at Nabble.com.
RE: Ofbiz with MySQL or PostgreSQL
Replication is native since 9.1. There has been a (very difficult to configure) addon for some time. Check this link: http://www.postgresql.org/docs/9.1/static/high-availability.html -Original Message- From: Brett Palmer [mailto:brettgpal...@gmail.com] Sent: Saturday, June 23, 2012 7:10 PM To: user@ofbiz.apache.org Subject: RE: Ofbiz with MySQL or PostgreSQL The only place I have found this to be a problem is in the server hit entity. The server hit functionality is configurable. We disable that functionality. We write custom applications using the ofbiz framework and don't do a lot of ecommerce apps so its not a problem for us. Brett On Jun 22, 2012 11:48 PM, Sanjeev Gupta subscr...@sanjeevg.com wrote: Thanks Bertt How do you manage with the timestamp problem mentioned by Ruth. SkipDever Is replication native in 9.1 or though add-on components ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4 633954.html Sent from the OFBiz - User mailing list archive at Nabble.com.
Re: Ofbiz with MySQL or PostgreSQL
I second on all Ruth and Scott said. Keeping it short: don't use MySQL if you can use PostgreSQL You can use pgpool-II as safe replication tool http://wiki.postgresql.org/wiki/Replication,_Clustering,_and_Connection_Pooling Jacques From: Ruth Hoffman rhoff...@aesolves.com As Scott mentions there are many parts of the OFBiz data model (and associated business logic) that use a Timestamp within database tables/entities as a primary-key. Another example: If you are using any of the content management logic (blog, content publication and RSS feed come to mind) you could have issues. Even business logic as seemingly trivial as allowing a user to have multiple shipping addresses (see the PartyContactMechPurpose entity) is effected since a Timestamp is used as part of the fields that make up the primary-key. FYI - I've seen this one in action. It wasn't immediately obvious what was going on until I looked directly in the database and saw the data. Regards, Ruth On 6/25/12 10:12 AM, Scott Gray wrote: It can also be a problem in tables like InventoryItemStatus or basically anywhere in the system that depends on being able to retrieve the latest record when it's possible for two records to have been created within the same second. Also anywhere that depends on a timestamp as part of the primary key and possible that similar records will be created within the same second (ProductAverageCost is another one like ServerHit). And in general losing that millisecond precision can make it difficult at times to know the order in which a set of actions took place when looking through the data. Regards Scott On 24/06/2012, at 2:10 PM, Brett Palmer wrote: The only place I have found this to be a problem is in the server hit entity. The server hit functionality is configurable. We disable that functionality. We write custom applications using the ofbiz framework and don't do a lot of ecommerce apps so its not a problem for us. Brett On Jun 22, 2012 11:48 PM, Sanjeev Gupta subscr...@sanjeevg.com wrote: Thanks Bertt How do you manage with the timestamp problem mentioned by Ruth. SkipDever Is replication native in 9.1 or though add-on components ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633954.html Sent from the OFBiz - User mailing list archive at Nabble.com.
Re: Ofbiz with MySQL or PostgreSQL
OK,thank you 在 2012-6-24 上午11:44，Brett Palmer brettgpal...@gmail.com写道： In the framework/webapp/config/ directory there is a serverstats.properties file that you can turn off and on stats. For example: stats.persist.REQUEST.hit=false stats.persist.EVENT.hit=false stats.persist.VIEW.hit=false stats.persist.ENTITY.hit=false stats.persist.SERVICE.hit=false The above properties will turn off persisting the stats for ofbiz which is where you get constraint errors in mysql because the server stats use a timestamp as a primary key. Brett On Sat, Jun 23, 2012 at 9:07 PM, 李明洋 cnsd.limingy...@gmail.com wrote: ho how to disable server hit? 在 2012-6-24 上午10:10，Brett Palmer brettgpal...@gmail.com写道： The only place I have found this to be a problem is in the server hit entity. The server hit functionality is configurable. We disable that functionality. We write custom applications using the ofbiz framework and don't do a lot of ecommerce apps so its not a problem for us. Brett On Jun 22, 2012 11:48 PM, Sanjeev Gupta subscr...@sanjeevg.com wrote: Thanks Bertt How do you manage with the timestamp problem mentioned by Ruth. SkipDever Is replication native in 9.1 or though add-on components ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633954.html Sent from the OFBiz - User mailing list archive at Nabble.com.
RE: Ofbiz with MySQL or PostgreSQL
The only place I have found this to be a problem is in the server hit entity. The server hit functionality is configurable. We disable that functionality. We write custom applications using the ofbiz framework and don't do a lot of ecommerce apps so its not a problem for us. Brett On Jun 22, 2012 11:48 PM, Sanjeev Gupta subscr...@sanjeevg.com wrote: Thanks Bertt How do you manage with the timestamp problem mentioned by Ruth. SkipDever Is replication native in 9.1 or though add-on components ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633954.html Sent from the OFBiz - User mailing list archive at Nabble.com.
RE: Ofbiz with MySQL or PostgreSQL
ho how to disable server hit? 在 2012-6-24 上午10:10，Brett Palmer brettgpal...@gmail.com写道： The only place I have found this to be a problem is in the server hit entity. The server hit functionality is configurable. We disable that functionality. We write custom applications using the ofbiz framework and don't do a lot of ecommerce apps so its not a problem for us. Brett On Jun 22, 2012 11:48 PM, Sanjeev Gupta subscr...@sanjeevg.com wrote: Thanks Bertt How do you manage with the timestamp problem mentioned by Ruth. SkipDever Is replication native in 9.1 or though add-on components ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633954.html Sent from the OFBiz - User mailing list archive at Nabble.com.
Re: Ofbiz with MySQL or PostgreSQL
In the framework/webapp/config/ directory there is a serverstats.properties file that you can turn off and on stats. For example: stats.persist.REQUEST.hit=false stats.persist.EVENT.hit=false stats.persist.VIEW.hit=false stats.persist.ENTITY.hit=false stats.persist.SERVICE.hit=false The above properties will turn off persisting the stats for ofbiz which is where you get constraint errors in mysql because the server stats use a timestamp as a primary key. Brett On Sat, Jun 23, 2012 at 9:07 PM, 李明洋 cnsd.limingy...@gmail.com wrote: ho how to disable server hit? 在 2012-6-24 上午10:10，Brett Palmer brettgpal...@gmail.com写道： The only place I have found this to be a problem is in the server hit entity. The server hit functionality is configurable. We disable that functionality. We write custom applications using the ofbiz framework and don't do a lot of ecommerce apps so its not a problem for us. Brett On Jun 22, 2012 11:48 PM, Sanjeev Gupta subscr...@sanjeevg.com wrote: Thanks Bertt How do you manage with the timestamp problem mentioned by Ruth. SkipDever Is replication native in 9.1 or though add-on components ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633954.html Sent from the OFBiz - User mailing list archive at Nabble.com.
RE: Ofbiz with MySQL or PostgreSQL
Postgres from 9.1 has good replication -Original Message- From: Brett Palmer [mailto:brettgpal...@gmail.com] Sent: Thursday, June 21, 2012 10:04 PM To: user@ofbiz.apache.org Subject: Re: Ofbiz with MySQL or PostgreSQL Sanjeev, We've used MySQL for several years now. I think most ofbiz user prefer Postgres. We like Postgres but the one feature that keeps us with MySQL is its replication feature. Replication in MySQL is very good and easy to administer. We use them for running reports which helps us scale our solution. We have a data warehouse with a fact table of over 30+ million rows and mysql does a good job with it. Brett On Thu, Jun 21, 2012 at 8:47 PM, Sanjeev Gupta subscr...@sanjeevg.comwrote: Thanks Ruth. I've also been told that the demo data upload in Postgres takes half as time as MySQL - so I'm guessing that the production env performance should also be better with Postgres. - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4 633907.html Sent from the OFBiz - User mailing list archive at Nabble.com.
RE: Ofbiz with MySQL or PostgreSQL
Thanks Bertt How do you manage with the timestamp problem mentioned by Ruth. SkipDever Is replication native in 9.1 or though add-on components ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633954.html Sent from the OFBiz - User mailing list archive at Nabble.com.
Re: Ofbiz with MySQL or PostgreSQL
Hi Sanjeev: If you use MySQL in its current state, be aware of Timestamp truncation. Since OFBiz uses timestamps in many places as part of a primary-key, you can (and do) loose precision and ultimately you may not be able to find records. You may not even know this is happening until it is too late. I've been told this has been fixed in the lasted (beta?) release of the JDBC driver. Personally, I prefer Postgres. Never had a problem and the tools for maintaining it are the best. Regards, Ruth Hoffman (http://www.aesolves.com) On 6/21/12 2:57 PM, Sanjeev Gupta wrote: I'm looking to decide on the database to be used with OfBiz in the production environment. Any thoughts on which database works well with Ofbiz - MySQL or PostgreSQL and why ? - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893.html Sent from the OFBiz - User mailing list archive at Nabble.com.
Re: Ofbiz with MySQL or PostgreSQL
Thanks Ruth. I've also been told that the demo data upload in Postgres takes half as time as MySQL - so I'm guessing that the production env performance should also be better with Postgres. - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633907.html Sent from the OFBiz - User mailing list archive at Nabble.com.
Re: Ofbiz with MySQL or PostgreSQL
Sanjeev, We've used MySQL for several years now. I think most ofbiz user prefer Postgres. We like Postgres but the one feature that keeps us with MySQL is its replication feature. Replication in MySQL is very good and easy to administer. We use them for running reports which helps us scale our solution. We have a data warehouse with a fact table of over 30+ million rows and mysql does a good job with it. Brett On Thu, Jun 21, 2012 at 8:47 PM, Sanjeev Gupta subscr...@sanjeevg.comwrote: Thanks Ruth. I've also been told that the demo data upload in Postgres takes half as time as MySQL - so I'm guessing that the production env performance should also be better with Postgres. - Rgds Sanjeev www.sanjeevg.com @sanjeevgcom -- View this message in context: http://ofbiz.135035.n4.nabble.com/Ofbiz-with-MySQL-or-PostgreSQL-tp4633893p4633907.html Sent from the OFBiz - User mailing list archive at Nabble.com.
