Re: [GENERAL] Questions regarding JSON processing

2017-04-26 15:06 GMT+02:00 Glen Huang : > @Pavel > > Thanks for bringing PLV8 to my attention. Wasn't aware of it. Sounds like > the right tool to for the job. I'll try it out. Do you think it makes sense > to use PLV8 to also generate JSON? Can it beat SQL? > Hard to say -

Re: [GENERAL] Questions regarding JSON processing

@Pavel Thanks for bringing PLV8 to my attention. Wasn't aware of it. Sounds like the right tool to for the job. I'll try it out. Do you think it makes sense to use PLV8 to also generate JSON? Can it beat SQL? Good to know functions are executed under transaction, I think that should be enough

Re: [GENERAL] Questions regarding JSON processing

On 4/25/2017 9:21 PM, Glen Huang wrote: For updating db using JSON requests from clients, that I'm not so sure. Should I directly pass the request JSON to PostgreSQL and ask it to parse this JSON and execute a transaction all by itself, or should I parse it in the server and generate the

Re: [GENERAL] Questions regarding JSON processing

2017-04-26 6:21 GMT+02:00 Glen Huang : > Hi all, > > I have a RESTful API server that sends and receives JSON strings. I'm > wondering what might be the best way to leverage PostgreSQL's JSON > capability. > > For sending JSON responses to clients. I believe the best way is to

[GENERAL] Questions regarding JSON processing

Hi all, I have a RESTful API server that sends and receives JSON strings. I'm wondering what might be the best way to leverage PostgreSQL's JSON capability. For sending JSON responses to clients. I believe the best way is to ask PostgreSQL to generate the JSON string and then pass that directly

Re: [GENERAL] questions about 2nd index on one column

> Please reply to list also. apologies, my bad. > It would seem that the index would not be rebuilt, assuming all conditions are the same. Thanks for finding this. This is enough info for me to spend a day experimenting. I did not want to waste a day if we knew upfront that it wont work. But

Re: [GENERAL] questions about 2nd index on one column

On 01/03/2017 11:35 AM, Ravi Kapoor wrote: Please reply to list also. Ccing list. > Yes I am aware of django EOL. However, our company is still using it, we > have a migration plan later this year, however for now, I got to work > with what we have. Still, you are missing 14 patch releases to

Re: [GENERAL] questions about 2nd index on one column

On 01/03/2017 11:07 AM, Ravi Kapoor wrote: I have a bit strange question. I am trying to figure out how to avoid table locking while creating an index through Django (1.5.1) in Postgres 9.4.7 Django 1.5.1 does not support concurrent indexing. So my thought is to first create a concurrent index

Re: [GENERAL] questions about 2nd index on one column

On 01/03/2017 11:07 AM, Ravi Kapoor wrote: I have a bit strange question. I am trying to figure out how to avoid table locking while creating an index through Django (1.5.1) in Postgres 9.4.7 First Django 1.5.x has been past end of life for 2.25 years. Second before it went EOL it was up to

[GENERAL] questions about 2nd index on one column

I have a bit strange question. I am trying to figure out how to avoid table locking while creating an index through Django (1.5.1) in Postgres 9.4.7 Django 1.5.1 does not support concurrent indexing. So my thought is to first create a concurrent index using SQL prompt. Then try to update django

Re: [GENERAL] Questions on Post Setup MASTER and STANDBY replication - Postgres9.1

o: Joanna Xu <joanna...@amdocs.com>; pgsql-general@postgresql.org Subject: Re: [GENERAL] Questions on Post Setup MASTER and STANDBY replication - Postgres9.1 On 11/2/16 2:49 PM, Joanna Xu wrote: > The replication is verified and works. My questions are what's the > reason causing "cp:

Re: [GENERAL] Questions on Post Setup MASTER and STANDBY replication - Postgres9.1

On 11/2/16 2:49 PM, Joanna Xu wrote: The replication is verified and works. My questions are what’s the reason causing “cp: cannot stat `/opt/postgres/9.1/archive/00010003': No such file or directory” on STANDBY and how to fix it? What instructions/tools did you use to setup

[GENERAL] Questions on Post Setup MASTER and STANDBY replication - Postgres9.1

Hi All, After setting up two nodes with MASTER and STANDBY replication, I see " cp: cannot stat `/opt/postgres/9.1/archive/00010003': No such file or directory" in the log on STANDBY and the startup process recovering "00010004" which does not exist in the

Re: [GENERAL] questions about how to implement a gist index

Hi Oleg, On Tue, Jun 28, 2016 at 1:05 AM, Oleg Bartunov wrote: > On Tue, Jun 28, 2016 at 12:44 AM, Riccardo Vianello > wrote: > > Could you please also help me understand the difference (if any) between > > using the GIST_LEAF macro or the

Re: [GENERAL] questions about how to implement a gist index

On Tue, Jun 28, 2016 at 12:44 AM, Riccardo Vianello wrote: > Hi all, > > I'm trying to contribute some improvements to the implementation of a gist > index that is part of an open source project and it would be really nice if > anyone could help me answer some

[GENERAL] questions about how to implement a gist index

Hi all, I'm trying to contribute some improvements to the implementation of a gist index that is part of an open source project and it would be really nice if anyone could help me answer some questions. I would like to use different data structures to represent the internal and leaf entries. I

Re: [GENERAL] Questions on dynamic execution and sqlca

2014-08-07 7:24 GMT+02:00 David Johnston david.g.johns...@gmail.com: - What are the differences among PL/SQL, PL/PGSQL and pgScript. The first two are languages you write functions in. pgScript is simply an informal way to group a series of statements together and have them execute

[GENERAL] Questions on dynamic execution and sqlca

I'm very new to Postgres, but have plenty of experience developing stored procs in Oracle. I'm going to be creating Postgres stored procedures (functions actually, since I discovered that in postgres, everything is a function) to do a variety of batch-type processing. These functions may or

Re: [GENERAL] Questions on dynamic execution and sqlca

Bill Epstein wrote I've tried a variety of ways based on the on-line docs I've seen, but I always get a syntax error on EXEC when I use only the line EXEC statement You likely need to use EXECUTE in PostgreSQL INFO: INSERT INTO UTILITY.BPC_AUDIT (COMPONENT, ACTIVITY, AUDIT_LEVEL,

Re: [GENERAL] Questions on dynamic execution and sqlca

On Aug 6, 2014, at 12:28 PM, Bill Epstein epste...@us.ibm.com wrote: I'm very new to Postgres, but have plenty of experience developing stored procs in Oracle. I found this helpful:

Re: [GENERAL] Questions on dynamic execution and sqlca

Le 6 août 2014 18:47, David G Johnston david.g.johns...@gmail.com a écrit : Bill Epstein wrote I've tried a variety of ways based on the on-line docs I've seen, but I always get a syntax error on EXEC when I use only the line EXEC statement You likely need to use EXECUTE in PostgreSQL

Re: [GENERAL] Questions on dynamic execution and sqlca

- What are the differences among PL/SQL, PL/PGSQL and pgScript. The first two are languages you write functions in. pgScript is simply an informal way to group a series of statements together and have them execute within a transaction. AFAICT, this isn't true. Pgscript is a

Re: [GENERAL] Questions about daterange() function

So here are my questions: 1) Is there anyway to control this behavior of daterange(), or is it just best to (for example) add 1 to the upper bound argument if I want an inclusive upper bound? See link for question #3; namely use the three-arg version of daterange (type,type,text)

[GENERAL] Questions about daterange() function

Hi. I've got lots of tables with start and end dates in them, and I'm trying to learn how to work with them as date ranges (which seem fantastic!). I've noticed that the daterange() function seems to create ranges with an inclusive lower bound, and an exclusive upper bound. For example: SELECT

Re: [GENERAL] Questions about daterange() function

On 06/25/2014 05:53 PM, Ken Tanzer wrote: Hi. I've got lots of tables with start and end dates in them, and I'm trying to learn how to work with them as date ranges (which seem fantastic!). I've noticed that the daterange() function seems to create ranges with an inclusive lower bound, and an

Re: [GENERAL] Questions about daterange() function

On Wed, Jun 25, 2014 at 6:12 PM, Adrian Klaver adrian.kla...@aklaver.com wrote: On 06/25/2014 05:53 PM, Ken Tanzer wrote: Hi. I've got lots of tables with start and end dates in them, and I'm trying to learn how to work with them as date ranges (which seem fantastic!). I've noticed that

Re: [GENERAL] Questions about daterange() function

Ken Tanzer wrote Hi. I've got lots of tables with start and end dates in them, and I'm trying to learn how to work with them as date ranges (which seem fantastic!). I've noticed that the daterange() function seems to create ranges with an inclusive lower bound, and an exclusive upper bound.

[GENERAL] Questions about DB capabilities

Hi, I have a question, is postgres cappable of horizontal growing, I mean, in the case I have a server that is reaching it’s full HD capacity, is there a way to add another server to use as an extensión of ther first one, like a cluster configuration, do you know a configuration that is

Re: [GENERAL] Questions about DB capabilities

On 5/15/2014 1:52 PM, Diego Ramón Cando Díaz wrote: Hi, I have a question, is postgres cappable of horizontal growing, I mean, in the case I have a server that is reaching it’s full HD capacity, is there a way to add another server to use as an extensión of ther first one, like a cluster

[GENERAL] general questions

Hi All; I recently ran into the following, any thoughts? Thanks in advance... 1) \d and schema's - I setup 2 schema's (sch_a and sch_b) - I added both schema's to my search_path - I created 2 tables: sch_a.test_tab and sch_b.test_tab If I do a \d with no parameters I only see the first

Re: [GENERAL] general questions

CS DBA cs_...@consistentstate.com writes: 1) \d and schema's - I setup 2 schema's (sch_a and sch_b) - I added both schema's to my search_path - I created 2 tables: sch_a.test_tab and sch_b.test_tab If I do a \d with no parameters I only see the first test_tab table based on the order of

Re: [GENERAL] general questions

On Thu, Jan 9, 2014 at 5:04 AM, Tom Lane t...@sss.pgh.pa.us wrote: CS DBA cs_...@consistentstate.com writes: 1) \d and schema's - I setup 2 schema's (sch_a and sch_b) - I added both schema's to my search_path - I created 2 tables: sch_a.test_tab and sch_b.test_tab If I do a \d with

[GENERAL] Questions: How to configure PostgreSQL at the beginning ....

Dear Sir or Madam, I have downloaded and installed the latest PostgreSQL version V9.2 to my Windows 7 OS PC. I want to have it running on my PC, as local host. Now I am facing some problems. 1.) I do not know, how to fill in the properties tab for the server, as name, host (what shall be host,

Re: [GENERAL] Questions: How to configure PostgreSQL at the beginning ....

On Tuesday, February 19, 2013 4:37 PM Tomas Pasterak wrote: I have downloaded and installed the latest PostgreSQL version V9.2 to my Windows 7 OS PC. I want to have it running on my PC, as local host. Now I am facing some problems. 1.) I do not know, how to fill in the properties tab for

Re: [GENERAL] Questions: How to configure PostgreSQL at the beginning ....

On 02/19/2013 03:07 AM, Tomas Pasterak wrote: Dear Sir or Madam, I have downloaded and installed the latest PostgreSQL version V9.2 to my Windows 7 OS PC. I want to have it running on my PC, as local host. Now I am facing some problems. 1.) I do not know, how to fill in the properties tab for

[GENERAL] Questions about 9.2 unique constraints

Hi, In PostgreSQL 9.0.x we must define a constraint as DEFERRABLE on the create table, we cannot define DEFERRABLE on create table as select, how is this restriction in 9.2 now? Also, in 9.2 can deferrable uniqueness be mixed with Foreign keys? Thanks -- Sent via pgsql-general mailing

[GENERAL] Questions of the privileges to use the pg_cancel_backend and pg_terminate_backend function. Thanks.

Hi Guys. I got one problem. I need to give some of the non-super users( kind of dba) to get the privileges to can cancel other users's query, DML. After I granted the execute on pg_cancel_backend and pg_terminate_backend function to them, they still get the error message as follows when they call

Re: [GENERAL] Questions of the privileges to use the pg_cancel_backend and pg_terminate_backend function. Thanks.

When I need to give other users access to a function that someone must be superuser to execute I write a security definer function. See: http://www.postgresql.org/docs/9.1/static/sql-createfunction.html Also: http://www.ibm.com/developerworks/opensource/library/os-postgresecurity/index.html

[GENERAL] Questions about setting an array element value outside of the update

Lets say i have subquery which produce array[], position and new_value Is here less clumsy way to set array[position] to the new_value (not update but just change an element inside an array) than: SELECT _array[1:pos-1] ||newval ||_array[_pos+1:array_length(_array, 1)]

Re: [GENERAL] Questions about setting an array element value outside of the update

On Dec 4, 2011, at 22:43, Maxim Boguk maxim.bo...@gmail.com wrote: Lets say i have subquery which produce array[], position and new_value Is here less clumsy way to set array[position] to the new_value (not update but just change an element inside an array) than: SELECT

Re: [GENERAL] Questions about setting an array element value outside of the update

David Johnston pol...@yahoo.com writes: Is here less clumsy way to set array[position] to the new_value (not update but just change an element inside an array) than: SELECT _array[1:pos-1] ||newval ||_array[_pos+1:array_length(_array, 1)] I do not know if there is a cleaner way but

[GENERAL] Questions about EXPLAIN

Hey, PostgreSQL 9.0 1) While comparing a simple GROUP/COUNT query I noticed that TEXT and JSON formats identify the Top-Level Plan Node differently (GroupAggregate vs. Aggregate). More curiosity than anything but I would have expected them to match. 2) For the same query I was hoping to be

Re: [GENERAL] Questions about Partitioning

On 19/04/11 23:56, Phoenix Kiula wrote: While I fix some bigger DB woes, I have learned a lesson. Huge indexes and tables are a pain. Which makes me doubly keen on looking at partitioning. Most examples I see online are partitioned by date. As in months, or quarter, and so on. This

[GENERAL] Questions about Partitioning

While I fix some bigger DB woes, I have learned a lesson. Huge indexes and tables are a pain. Which makes me doubly keen on looking at partitioning. Most examples I see online are partitioned by date. As in months, or quarter, and so on. This doesn't work for me as I don't have too much logic

Re: [GENERAL] Questions about Partitioning

On 04/19/2011 08:56 AM, Phoenix Kiula wrote: While I fix some bigger DB woes, I have learned a lesson. Huge indexes and tables are a pain. Which makes me doubly keen on looking at partitioning. Before jumping into partitioning it would be useful to know specifically what pain you are having

[GENERAL] Questions about octal vs. hex for bytea

Hi, everyone. I've got a client who is planning to upgrade from PostgreSQL 8.3 to 9.0 in the coming weeks. They use a lot of tables with bytea columns. They're worried about the switch from octal to hex formats for bytea data. Based on everything I know and have read, the change is only

Re: [GENERAL] Questions about octal vs. hex for bytea

Reuven M. Lerner reu...@lerner.co.il wrote: So I've told them that I don't think that anything is necessary for either input or output, except (perhaps) to set bytea_output in its backward-compatibility mode. But I wanted to check with people here, just to double-check my understanding.

Re: [GENERAL] Questions about octal vs. hex for bytea

...@postgresql.org] On Behalf Of Reuven M. Lerner Sent: Sunday, February 20, 2011 6:31 AM To: pgsql-general@postgresql.org Subject: [GENERAL] Questions about octal vs. hex for bytea Hi, everyone. I've got a client who is planning to upgrade from PostgreSQL 8.3 to 9.0 in the coming weeks. They use a lot

Re: [GENERAL] Questions about octal vs. hex for bytea

Reuven M. Lerner reu...@lerner.co.il Sunday 20 February 2011 12:31:09 Hi, everyone. I've got a client who is planning to upgrade from PostgreSQL 8.3 to 9.0 in the coming weeks. They use a lot of tables with bytea columns. They're worried about the switch from octal to hex formats for bytea

Re: [GENERAL] Questions about octal vs. hex for bytea

Reuven M. Lerner reu...@lerner.co.il writes: My client is concerned that the internal representation has changed, and is asking me for a script that will change the representation, in order to save space (since hex occupies less space than octal). This is complete nonsense. The internal

Re: [GENERAL] Questions about octal vs. hex for bytea

Thanks, everyone, for the swift and clear responses. It's good to know that I did understand things correctly! Reuven -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general

[GENERAL] Questions regarding SET option.

Hello All, I have been writing a function with SECURITY DEFINER enabled. Basically, I am looking for ways to override the users SET option settings while executing my function to prevent the permissions breach. For example, to override SET search_path, I am setting search path in my function

Re: [GENERAL] Questions regarding SET option.

Hello you can overwrite standard settings only for function CREATE [ OR REPLACE ] FUNCTION name ( [ [ argmode ] [ argname ] argtype [ { DEFAULT | = } default_expr ] [, ...] ] ) [ RETURNS rettype | RETURNS TABLE ( column_name column_type [, ...] ) ] { LANGUAGE lang_name |

Re: [GENERAL] Questions regarding SET option.

Jignesh Shah wrote: I have been writing a function with SECURITY DEFINER enabled. Basically, I am looking for ways to override the users SET option settings while executing my function to prevent the permissions breach. For example, to override SET search_path, I am setting search path in

Re: [GENERAL] Questions regarding SET option.

Thanks a ton Laurenz and Pavel for your responses but I really didn't follow you. I am not master in PostGreSQL yet. Could you please give me some example? Basically, I want to know how many such SET options I should reset before executing my function and at the end it should also be restored to

Re: [GENERAL] Questions regarding SET option.

2010/2/22 Jignesh Shah jignesh.shah1...@gmail.com: Thanks a ton Laurenz and Pavel for your responses but I really didn't follow you. I am not master in PostGreSQL yet. Could you please give me some example? Basically, I want to know how many such SET options I should reset before executing

Re: [GENERAL] Questions regarding SET option.

set work_mem to '1MB' set search_path = 'public'; Thanks for the example Pavel. I understood it. Are there any other SET options except above that I need to set to prevent security breach? Thanks, Jack On Mon, Feb 22, 2010 at 11:41 PM, Pavel Stehule pavel.steh...@gmail.comwrote: 2010/2/22

Re: [GENERAL] Questions regarding SET option.

2010/2/22 Jignesh Shah jignesh.shah1...@gmail.com: set work_mem to '1MB' set search_path = 'public'; Thanks for the example Pavel. I understood it. Are there any other SET options except above that I need to set to prevent security breach? I am not sure - I know only search_path Pavel

Re: [GENERAL] questions about a table's row estimates

On Feb 10, 2010, at 10:28 PM, Greg Smith wrote: Ben Chobot wrote: I'm looking at pg_stat_user_tables in 8.4.2, and I'm confused about n_live_tup. Shouldn't that be at least fairly close to (n_tup_ins - n_tup-del)? It doesn't seem to be, but I'm unclear why. Insert 2000 tuples. Delete

Re: [GENERAL] questions about a table's row estimates

Ben Chobot be...@silentmedia.com writes: And unfortunately, Tom, we're not resetting stats counters. :( Mph. Well, the other thing that comes to mind is that n_live_tup (and n_dead_tup) is typically updated by ANALYZE, but only to an estimate based on ANALYZE's partial sample of the table. If

Re: [GENERAL] questions about a table's row estimates

Ben Chobot wrote: I'm looking at pg_stat_user_tables in 8.4.2, and I'm confused about n_live_tup. Shouldn't that be at least fairly close to (n_tup_ins - n_tup-del)? It doesn't seem to be, but I'm unclear why. Insert 2000 tuples. Delete 1000 tuples. vacuum Insert 1000 tuples. These go into

Re: [GENERAL] questions about a table's row estimates

Greg Smith g...@2ndquadrant.com writes: Ben Chobot wrote: I'm looking at pg_stat_user_tables in 8.4.2, and I'm confused about n_live_tup. Shouldn't that be at least fairly close to (n_tup_ins - n_tup-del)? It doesn't seem to be, but I'm unclear why. Insert 2000 tuples. Delete 1000

Re: [GENERAL] questions about a table's row estimates

On Feb 5, 2010, at 12:14 PM, Ben Chobot wrote: I'm looking at pg_stat_user_tables in 8.4.2, and I'm confused about n_live_tup. Shouldn't that be at least fairly close to (n_tup_ins - n_tup-del)? It doesn't seem to be, but I'm unclear why. Is everybody else unclear as well? -- Sent via

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

Alvaro Herrera alvhe...@commandprompt.com writes: For example, perhaps there could be a new pair of functions pg_read_hba_file/pg_write_hba_file that would work even if the files are placed in other directories, but they (Debian) would need to propose it. I don't remember they had to provide

[GENERAL] questions about a table's row estimates

I'm looking at pg_stat_user_tables in 8.4.2, and I'm confused about n_live_tup. Shouldn't that be at least fairly close to (n_tup_ins - n_tup-del)? It doesn't seem to be, but I'm unclear why. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

Thanks Richard and Alvaro. The show hba_file is great solution. Thanks a ton. Could you tell me from where to get all such commands? Thanks, Dip On Mon, Feb 1, 2010 at 9:43 PM, Alvaro Herrera alvhe...@commandprompt.comwrote: dipti shah escribió: Thanks Richard. those chapters are very useful.

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

Techdb=# show hba_file; hba_file -- /etc/postgresql/8.4/main/pg_hba.conf (1 row) Moreover, is there anyway to view content of this file from stored in above location Techdb command prompt itself. Techdb=# cat

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

On 02/02/10 09:55, dipti shah wrote: Thanks Richard and Alvaro. The show hba_file is great solution. Thanks a ton. Could you tell me from where to get all such commands? All the configuration settings are listed in Chapter 18: http://www.postgresql.org/docs/8.4/static/runtime-config.html

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

On 02/02/10 09:58, dipti shah wrote: Techdb=# show hba_file; hba_file -- /etc/postgresql/8.4/main/pg_hba.conf (1 row) Ah! you're running a Debian-based system by the look of it. Moreover, is there anyway to view content of this file from

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

Wow!!..that was too quick. Thanks Richard. On Tue, Feb 2, 2010 at 3:29 PM, Richard Huxton d...@archonet.com wrote: On 02/02/10 09:55, dipti shah wrote: Thanks Richard and Alvaro. The show hba_file is great solution. Thanks a ton. Could you tell me from where to get all such commands? All

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

dipti shah escribió: Techdb=# show hba_file; hba_file -- /etc/postgresql/8.4/main/pg_hba.conf (1 row) Moreover, is there anyway to view content of this file from stored in above location Techdb command prompt itself. Techdb=# cat

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

On Tue, February 2, 2010 08:23, Alvaro Herrera wrote: dipti shah escribió: Techdb=# show hba_file; hba_file -- /etc/postgresql/8.4/main/pg_hba.conf (1 row) Moreover, is there anyway to view content of this file from stored in above

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

Tim Bruce - Postgres escribió: On Tue, February 2, 2010 08:23, Alvaro Herrera wrote: Probably pg_read_file(): select pg_read_file('pg_hba.conf', 0, 8192); Note that pg_read_file only allows paths relative to $PGDATA, which is what you get from SHOW data_directory; Since the

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

On Tue, 2010-02-02 at 16:09 -0300, Alvaro Herrera wrote: Tim Bruce - Postgres escribió: On Tue, February 2, 2010 08:23, Alvaro Herrera wrote: Probably pg_read_file(): select pg_read_file('pg_hba.conf', 0, 8192); Note that pg_read_file only allows paths relative to $PGDATA,

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

Joshua D. Drake escribió: On Tue, 2010-02-02 at 16:09 -0300, Alvaro Herrera wrote: Tim Bruce - Postgres escribió: On Tue, February 2, 2010 08:23, Alvaro Herrera wrote: Probably pg_read_file(): select pg_read_file('pg_hba.conf', 0, 8192); Note that pg_read_file only

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

I am connected to database as postgres user. '\!exec ..' doesn't work if I connect to the database from other host but it does work if I connect to the database from server where I have PostGreSQL installed. pg_read_file doesn't work in any case. Techdb=# \! exec cat

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

dipti shah wrote: I am connected to database as postgres user. '\!exec ..' doesn't work if I connect to the database from other host but it does work if I connect to the database from server where I have PostGreSQL installed. pg_read_file doesn't work in any case. Techdb=# \! exec cat

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

That makes sense. Thanks, Dipti On Wed, Feb 3, 2010 at 12:08 PM, John R Pierce pie...@hogranch.com wrote: dipti shah wrote: I am connected to database as postgres user. '\!exec ..' doesn't work if I connect to the database from other host but it does work if I connect to the database from

[GENERAL] Questions on PostGreSQL Authentication mechanism...

Hi, we have latest PostGreSQL setup and it allows everyone to connect. When I do \du, it gives following output and it is same for all users. TechDB=# \du List of roles Role name | Superuser | Create role | Create DB | Connections | Member of

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

On 01/02/10 07:35, dipti shah wrote: Moreover, anyone can connect to databases as postgres user without giving password. I am not aware how above setup has been made but I want to get rid of them. Could anyone please help me in below questions? You'll want to read Chapter 19 of the manuals

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

Thanks Richard. those chapters are very useful. I got to know most of concepts but didn't find the location of pg_hba.conf file so that I can verify it. I have connected to my database using postgres user. Could you tell me how to open pg_hba.conf file? Thanks. On Mon, Feb 1, 2010 at 3:06 PM,

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

On 01/02/10 10:24, dipti shah wrote: Thanks Richard. those chapters are very useful. I got to know most of concepts but didn't find the location of pg_hba.conf file so that I can verify it. I have connected to my database using postgres user. Could you tell me how to open pg_hba.conf file? It

Re: [GENERAL] Questions on PostGreSQL Authentication mechanism...

dipti shah escribió: Thanks Richard. those chapters are very useful. I got to know most of concepts but didn't find the location of pg_hba.conf file so that I can verify it. I have connected to my database using postgres user. Could you tell me how to open pg_hba.conf file? Run this:

Re: [GENERAL] general questions postgresql performance config

On 1/25/2010 8:12 PM, Craig Ringer wrote: On 26/01/2010 12:15 AM, Dino Vliet wrote: 5) Other considerations? Even better is to use COPY to load large chunks of data. libpq provides access to the COPY interface if you feel like some C coding. The JDBC driver (dev version only so far) now

Re: [GENERAL] general questions postgresql performance config

Andy Colson wrote: I recall seeing someplace that you can avoid WAL if you start a transaction, then truncate the table, then start a COPY. Is that correct? Still hold true? Would it make a lot of difference? That is correct, still true, and can make a moderate amount of difference if the

Re: [GENERAL] general questions postgresql performance config

To: pgsql-general@postgresql.org Date: 01/25/2010 09:57 PM Subject:[GENERAL] general questions postgresql performance config Sent by:pgsql-general-ow...@postgresql.org Dear postgresql people, Introduction Today I've been given the task to proceed with my plan to use

Re: [GENERAL] Questions about connection clean-up and invalid page header

On Sun, Jan 24, 2010 at 3:17 AM, Herouth Maoz hero...@unicell.co.il wrote: Hi Everybody. I have two questions. 1. We have a system that is accessed by Crystal reports which is in turned controlled by another (3rd party) system. Now, when a report takes too long or the user cancels it, it

Re: [GENERAL] Questions about connection clean-up and invalid page header

Scott Marlowe wrote: You can shorten the tcp_keepalive settings so that dead connections get detected faster. Thanks, I'll ask my sysadmin to do that. Might be, but not very likely. I and many others run pgsql in production environments where it handles thousands of updates / inserts per

Re: [GENERAL] Questions about connection clean-up and invalid page header

On Mon, Jan 25, 2010 at 8:15 AM, Scott Marlowe scott.marl...@gmail.com wrote: Is there a parameter to set in the configuration or some other means to shorten the time before an abandoned backend's query is cancelled? You can shorten the tcp_keepalive settings so that dead connections get

Re: [GENERAL] Questions about connection clean-up and invalid page header

Greg Stark wrote: On Mon, Jan 25, 2010 at 8:15 AM, Scott Marlowe scott.marl...@gmail.com wrote: Is there a parameter to set in the configuration or some other means to shorten the time before an abandoned backend's query is cancelled? You can shorten the tcp_keepalive settings so

Re: [GENERAL] Questions about connection clean-up and invalid page header

On Mon, Jan 25, 2010 at 11:37 AM, Herouth Maoz hero...@unicell.co.il wrote: The tcp_keepalive setting would only come into play if the remote machine crashed or was disconnected from the network. That's the situation I'm having, so it's OK. Crystal, being a Windows application, obviously

Re: [GENERAL] Questions about connection clean-up and invalid page header

Greg Stark wrote: On Mon, Jan 25, 2010 at 11:37 AM, Herouth Maoz hero...@unicell.co.il wrote: The tcp_keepalive setting would only come into play if the remote machine crashed or was disconnected from the network. That's the situation I'm having, so it's OK. Crystal, being a Windows

Re: [GENERAL] Questions about connection clean-up and invalid page header

On Mon, Jan 25, 2010 at 1:16 PM, Herouth Maoz hero...@unicell.co.il wrote: Well, I assume by the fact that eventually I get an Unexpected end of file message for those queries, that something does go in and check them. Do you have any suggestion as to how to cause the postgresql server to do so

[GENERAL] general questions postgresql performance config

Dear postgresql people,   Introduction Today I've been given the task to proceed with my plan to use postgresql and other open source techniques to demonstrate to the management of my department the usefullness and the cost savings potential that lies ahead. You can guess how excited I am

Re: [GENERAL] general questions postgresql performance config

On 26/01/2010 12:15 AM, Dino Vliet wrote: 5) Other considerations? To get optimal performance for bulk loading you'll want to do concurrent data loading over several connections - up to as many as you have disk spindles. Each connection will individually be slower, but the overall

Re: [GENERAL] general questions postgresql performance config

On Mon, Jan 25, 2010 at 9:15 AM, Dino Vliet dino_vl...@yahoo.com wrote: Introduction Today I've been given the task to proceed with my plan to use postgresql and other open source techniques to demonstrate to the management of my department the usefullness and the cost savings potential

[GENERAL] Questions about connection clean-up and invalid page header

Hi Everybody. I have two questions. 1. We have a system that is accessed by Crystal reports which is in turned controlled by another (3rd party) system. Now, when a report takes too long or the user cancels it, it doesn't send a cancel request to Postgres. It just kills the Crystal process

[GENERAL] Questions On Tablespace

Hi Everyone, I have questions regarding tablespaces, What happens when the disk on which my tablespace is in fills up? How do I expand my tablespace, in oracle there is a concept of datafiles? In postgresql I specify a directory instead of a single file... For example I have two tables and they

Re: [GENERAL] Questions On Tablespace

Carlo Camerino carlo.camer...@gmail.com writes: I have questions regarding tablespaces, What happens when the disk on which my tablespace is in fills up? You start getting errors. How do I expand my tablespace, in oracle there is a concept of datafiles? In postgresql I specify a directory

[GENERAL] Questions about encoding between two databases

Hello, I am sitting on version 7.4.x and am going to upgrade to version 8.3.x. From all I can read I should have no problem with actual format of the pgdump file (for actual dumping and restoring purposes) but I am having problems with encoding (which I was fairly sure I would). I have

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