Hao Wang wrote:
I installed PostgresSQL-8.3 on my linux machine.
The cluster directory is /usr/local/data and I created three
databases
named db1, db2, and db3. db1 is
in the default tablespace 'pg_default'. db2 is in
'/home/tablespace/space1/' and db3 is in
'/home/tablespace/space2/'. I
My purpose is not to do backup for my database. I just want to copy the whole
db3 database to another machine and restore it. That database could be very
large so I think directly copy is more efficient than pg_dump. So I'd like to
do some test to see if this way works. If it doesn't work, I
Andrus kobrule...@hot.ee writes:
How to find first free half hour in table which is not reserved ?
E.q if table contains
startdate starthour duration
14 9 1 -- ends at 9:59
14 10 1.5-- ends at 11:29, e.q there is
30
Hao Wang wrote:
My purpose is not to do backup for my database.
I understood that. It was just a side comment.
I just want to copy the whole db3 database to another
machine and restore it. That database could be very large so I think
directly copy is more efficient
than pg_dump. So I'd
Hi all,
Can we create composite index for one text column and integer column?
Thanks in advance..
--
Best Regards,
Vishalakshi.N
Vishalakshi Navaneethakrishnan, 15.11.2012 12:11:
Hi all,
Can we create composite index for one text column and integer column?
Yes of course. What happened when you tried?
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Vishalakshi Navaneethakrishnan wrote:
Can we create composite index for one text column and integer column?
Yes.
It would probably have been faster to try it than
to send this e-mail...
Yours,
Laurenz Albe
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Thanks for your example Chris. I will look into it as a long-term solution.
Partitioning tables as a strategy worked very well indeed. This will be my
short/medium term solution.
Another strategy that I would like to evaluate as a short/medium term
solution is archiving old records in a table
Here is the current formal definition for index creation:
http://www.postgresql.org/docs/9.2/static/sql-createindex.html
From: pgsql-general-ow...@postgresql.org
[mailto:pgsql-general-ow...@postgresql.org] On Behalf Of Vishalakshi
Navaneethakrishnan
Sent: Thursday, November 15, 2012 3:12 AM
Hi,
How can I list all schema names inside a PostgreSQL database through
SQL, especially thoese without any objects created inside it.
Regards,
Xiaobo Gu
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2012/11/15 Xiaobo Gu guxiaobo1...@gmail.com:
How can I list all schema names inside a PostgreSQL database through
SQL, especially thoese without any objects created inside it.
Something like this:
select n.nspname, count(o.oid)
from pg_namespace n
left join pg_class o on
On Πεμ 15 Îοε 2012 20:31:05 Xiaobo Gu wrote:
Hi,
How can I list all schema names inside a PostgreSQL database through
SQL, especially thoese without any objects created inside it.
1st solution :
select catalog_name,schema_name from information_schema.schemata ;
2nd solution :
If you are looking for list of empty schema's (No objects in schema), then
you can use below query:
select nspname from pg_namespace where oid not in (select relnamespace from
pg_class) and oid not in (select oid from pg_proc);
Regards,
Baji Shaik.
On Thu, Nov 15, 2012 at 6:13 PM, Achilleas
On Thu, Nov 15, 2012 at 1:34 PM, Chitra Creta chitracr...@gmail.com wrote:
Thanks for your example Chris. I will look into it as a long-term solution.
Partitioning tables as a strategy worked very well indeed. This will be my
short/medium term solution.
Another strategy that I would like to
Hi,
I've a segfault on a PostgreSQL 9.1 cluster, with a plproxy function
call. Both PostgreSQL and plproxy are up to date. I use SQL/MED in that
specific case, but it's the same without. I reproduced the following
scenario on a few clusters, with or without streaming replication.
On a given
On Wed, Nov 14, 2012 at 4:08 PM, John R Pierce pie...@hogranch.com wrote:
On 11/14/12 1:34 PM, Vlad wrote:
thanks for your feedback. While implementing connection pooling would make
resources utilization more efficient, I don't think it's the root of my
problem. Most of the connected clients
there is no big spike of queries that cause that, queries come in
relatively stable pace. It's just when the higher rate of queries coming,
the more likely this to happen. yes, when stall happens , the active
queries pile up - but that's the result of a stall (the server reacts slow
on a
On 11/14/2012 01:02 PM, Andrus wrote:
I’m looking for a way to find first free time in reservations table.
Reservation table contains reservations start dates, start hours and
durations.
Start hour is by half hour increments in working hours 8:00 .. 18:00
in work days.
Duration is also by
top post: this looks like a plproxy bug (no ?), I've added Marko in CC.
I've a segfault on a PostgreSQL 9.1 cluster, with a plproxy function
call. Both PostgreSQL and plproxy are up to date. I use SQL/MED in that
specific case, but it's the same without. I reproduced the following
scenario on
On Thu, Nov 15, 2012 at 11:50 AM, Vlad marche...@gmail.com wrote:
there is no big spike of queries that cause that, queries come in relatively
stable pace. It's just when the higher rate of queries coming, the more
likely this to happen. yes, when stall happens , the active queries pile up
-
Merlin,
this is not my report, probably from a thread that I've referenced as
having a common symptoms. Here is info about my db:
Postgresql 9.1.6.
Postgres usually has 400-500 connected clients, most of them are idle.
Database is over 1000 tables (across 5 namespaces), taking ~150Gb on disk.
On Thu, Nov 15, 2012 at 2:20 PM, Vlad marche...@gmail.com wrote:
Merlin,
this is not my report, probably from a thread that I've referenced as having
a common symptoms. Here is info about my db:
Postgresql 9.1.6.
Postgres usually has 400-500 connected clients, most of them are idle.
yeah. ok, nest steps:
*) can you confirm that postgres process is using high cpu (according
to top) during stall time
yes, CPU is spread across a lot of postmasters
PID USER PR NI VIRT RES SHR S %CPU %MEMTIME+ COMMAND
29863 pgsql 20 0 3636m 102m 36m R 19.1 0.3
Hi,
On 15 November 2012 23:31, Xiaobo Gu guxiaobo1...@gmail.com wrote:
How can I list all schema names inside a PostgreSQL database through
SQL, especially thoese without any objects created inside it.
Use -E psql's option:
-E, --echo-hiddendisplay queries that internal commands
On Thu, Nov 15, 2012 at 2:44 PM, Vlad marche...@gmail.com wrote:
yeah. ok, nest steps:
*) can you confirm that postgres process is using high cpu (according
to top) during stall time
yes, CPU is spread across a lot of postmasters
PID USER PR NI VIRT RES SHR S %CPU %MEM
On Thu, Nov 15, 2012 at 3:49 PM, Merlin Moncure mmonc...@gmail.com wrote:
On Thu, Nov 15, 2012 at 2:44 PM, Vlad marche...@gmail.com wrote:
yeah. ok, nest steps:
*) can you confirm that postgres process is using high cpu (according
to top) during stall time
yes, CPU is spread across a lot
Merlin Moncure escribió:
ok, excellent. reviewing the log, this immediately caught my eye:
recvfrom(8, \27\3\1\0@, 5, 0, NULL, NULL) = 5
recvfrom(8,
\327\327\nl\231LD\211\346\243@WW\254\244\363C\326\247\341\177\255\263~\327HDv-\3466\353...,
64, 0, NULL, NULL) = 64
select(0, NULL, NULL,
sorry - no panics / errors in the log...
-- Vlad
Hello,
I'd like to write a histogram-like query that shows these columns:
- x-value from 0 to k.
- number of rows with that x-value.
- number of rows seen so far (i.e. with the current x-value or less).
- % of total rows seen so far.
The following query works for the first three columns,
On Thu, Nov 15, 2012 at 4:29 PM, Alvaro Herrera
alvhe...@2ndquadrant.com wrote:
Merlin Moncure escribió:
ok, excellent. reviewing the log, this immediately caught my eye:
recvfrom(8, \27\3\1\0@, 5, 0, NULL, NULL) = 5
recvfrom(8,
From: pgsql-general-ow...@postgresql.org
[mailto:pgsql-general-ow...@postgresql.org] On Behalf Of Paul Jungwirth
Sent: Thursday, November 15, 2012 5:44 PM
To: pgsql-general@postgresql.org
Subject: [GENERAL] Percent of Total in Histogram Query
Hello,
I'd like to write a histogram-like
Merlin Moncure mmonc...@gmail.com writes:
What I've been scratching my head over is what code exactly would
cause an iterative sleep like the above. The code is here:
pg_usleep(cur_delay * 1000L);
/* increase delay by a random fraction between 1X and 2X */
cur_delay += (int)
Tom,
I just checked the version I'm running (9.1.6), and the code is quite
similar (src/backend/storage/lmgr/s_lock.c)
pg_usleep(cur_delay * 1000L);
#if defined(S_LOCK_TEST)
fprintf(stdout, *);
fflush(stdout);
#endif
/* increase delay by a
On Thu, Nov 15, 2012 at 2:44 PM, Merlin Moncure mmonc...@gmail.com wrote:
select(0, NULL, NULL, NULL, {0, 1000}) = 0 (Timeout)
select(0, NULL, NULL, NULL, {0, 1000}) = 0 (Timeout)
select(0, NULL, NULL, NULL, {0, 1000}) = 0 (Timeout)
select(0, NULL, NULL, NULL, {0, 2000}) = 0 (Timeout)
Hi there
I am using pgagent without problems but I have a few questions:
- I see that pgagent does log its acivities in the tables pga_joblog and
pga_jobsteplog. My log gets quiet big.
1) Is it save to empty these tables once a while manually?
2) Is there a settings to tell pgagent to purge
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