[GENERAL] Installing postgis-pg90-setup-1.5.2-3 on windows after installing postgresql-9.0.1-1-windows_x64 errors off
Hi, Installing postgis-pg90-setup-1.5.2-3 on windows after installing postgresql-9.0.1-1-windows_x64 errors off (see below error). I believe that postgres is a 64 bit application and postgis is a 32 bit application so I don't know if that is the reason why it errors off. *psql:C:/Program Files/PostgreSQL/9.0/share/contrib/postgis-1.5/postgis.sql:58: ERROR: could not load library C:/Program Files/PostgreSQL/9.0/lib/postgis-1.5.dll: %1 is not a valid Win32 application. * John -- John J. Mitchell
Re: [GENERAL] What locking mechanism is used for database backup and restore and Master-Slave Replication?
When is the new version of postgres (8.5) scheduled to be released as the latest stable version? Thanks, John 2010/1/21 Grzegorz Jaśkiewicz gryz...@gmail.com depends on what sort of replication you are going to use really. Most are based on triggers. So they have a bit more impact on performance. As far as locking goes, postgresql is very conservative with locks, ie - it won't abuse them, unlike for instance mysql. So I don't know whether you are just worried about performance in general, or locking in particular. But impact of likes of slony isn't that big, but obviously once the new version is out - it will be even less of a problem, since postgresql already produces transactional log for recovering, and pretty much the same log is going to be used for replication. 2010/1/21 John Mitchell mitchellj...@gmail.com: So am I to presume that the current stable version of postgres (before 8.5) does require extra locking? John 2010/1/21 Grzegorz Jaśkiewicz gryz...@gmail.com On Thu, Jan 21, 2010 at 1:12 PM, John Mitchell mitchellj...@gmail.com wrote: Hi, In reading the documentation it states that the SQL dump backup does not block other operations on the database while it is working. yes, pg_dump opens serializable transaction thus guarantees data to be the exact snapshot (as opposed to the default isolation level, which is called 'read commited' not without reason). I presume that while a restore is occurring that no reads or updates are allowed against the restored database. nope, what restoring does, is just running all the commands in the pg_dump (whether it is binary or textual). So as soon as the database is created, it is treated just as any connection, thus allows you to connect and use it. What locking mechanism is used for Master-Slave Replication? master slave that's introduced in what's to be 9.0 (aka 8.5), uses WAL shipping. So it doesn't require any extra locking. -- GJ -- John J. Mitchell -- GJ -- John J. Mitchell
[GENERAL] What locking mechanism is used for database backup and restore and Master-Slave Replication?
Hi, In reading the documentation it states that the SQL dump backup does not block other operations on the database while it is working. I presume that while a restore is occurring that no reads or updates are allowed against the restored database. What locking mechanism is used for Master-Slave Replication? Thanks, John J. Mitchell
Re: [GENERAL] What locking mechanism is used for database backup and restore and Master-Slave Replication?
So am I to presume that the current stable version of postgres (before 8.5) does require extra locking? John 2010/1/21 Grzegorz Jaśkiewicz gryz...@gmail.com On Thu, Jan 21, 2010 at 1:12 PM, John Mitchell mitchellj...@gmail.com wrote: Hi, In reading the documentation it states that the SQL dump backup does not block other operations on the database while it is working. yes, pg_dump opens serializable transaction thus guarantees data to be the exact snapshot (as opposed to the default isolation level, which is called 'read commited' not without reason). I presume that while a restore is occurring that no reads or updates are allowed against the restored database. nope, what restoring does, is just running all the commands in the pg_dump (whether it is binary or textual). So as soon as the database is created, it is treated just as any connection, thus allows you to connect and use it. What locking mechanism is used for Master-Slave Replication? master slave that's introduced in what's to be 9.0 (aka 8.5), uses WAL shipping. So it doesn't require any extra locking. -- GJ -- John J. Mitchell
[GENERAL] When running pgsql2shp it truncates fields that are over 10 characters. How can I prevent this from occurring?
When running pgsql2shp it truncates fields that are over 10 characters. How can I prevent this from occurring? John -- John J. Mitchell
[GENERAL] How do I connect postgres table structures and view structures to an existing svn repository?
Hi, How do I connect postgres table structures and view structures to an existing svn repository? Thanks, -- John J. Mitchell
Re: [GENERAL] How do I connect postgres table structures and view structures to an existing svn repository?
Hi, I am trying to store schema definitions in version-control which I can do by saving the definition and then importing into svn, but I would like it to be automatic , so that when an update occurs to a table or view within postgres then that table or view is flagged within svn. This would be similar to what I currently do with source code that I have for a web app within eclipse. On 8/1/07, Tino Wildenhain [EMAIL PROTECTED] wrote: John Mitchell schrieb: Hi, How do I connect postgres table structures and view structures to an existing svn repository? Please elaborate: what do you mean with connect? If you want to version control your DDL, people use pgdump to create individual dumps (as sql text files) and just add/commit them to the repository. Regards Tino -- John J. Mitchell
