I'm using Postgresql 9.6 and pgAdmin 4. Fresh install on both Windows and Mac, happens on both.
I need to store the current time and date.
None of my timestamp functions are returning times.
Time and Date work fine
SELECT CURRENT_DATE
Output: 2016-07-15
SELECT CURRENT_TIME
Output: 14:27:22.333352+01:00
SELECT CURRENT_TIMESTAMP
Output: 2016-07-15T00:00:00Z
Expected: 2016-07-15T14:27:22+01:00
SELECT now()
Output: 2016-07-15T00:00:00Z
Expected: 2016-07-15T14:27:22+01:00
What is the problem here?
set timezone TO 'GMT';
SET TIME ZONE 'UTC';
OR
You can set timezone param into pgsql/data/postgresql.conf file:
timezone = 'US/Central'
and then restart postgresql sever.
The problem is a bug in pgAdmin 4.
Timestamps are displayed incorrectly with the time set to 00:00:00Z
The data is stored correctly and the correct time can be observed using a different a different client such as psql
This issue has been resolved with newer version of pgAdmin4.
Related
Running SELECT current_timestamp in Dbeaver running PostgreSQL Version 12.2 gives me a datetime result that is 8 Days, 2 Hours and 4 minutes in the past compared to my system time. I am not sure if I need to tweak a time setting somewhere...
There are two explanations I can think of:
the system time on the database server is off
the timezone parameter is set to a weird value in your client session
I am trying to change the RDS timezone to UTC,
I'm using an SQL Client called DBeaver
I tried the following two commands -
1. Configuration Parameter Name -
SET timezone TO 'UTC';
and
2. Standard SQL Command -
SET TIME ZONE 'UTC';
But the select now(); command still doesn't return the UTC time
I am referring this answer -
postgres default timezone
Tried the following -
echo $PGTZ
SET TIME ZONE 'UTC';
ALTER DATABASE your_db_name SET timezone TO 'UTC';
Maybe you are using a connection pool, and session settings get cleared when the session returns to the pool.
You could try something like
ALTER ROLE your_user SET timezone = 'UTC';
You must reconnect for this to take effect.
Also, check if the environment variable PGTZ is set in your environment. It will override the database settings.
If all that doesn't do the trick, consider the possibility that the server's time is off.
prompt$ date
Mon Oct 7 17:32:24 UTC 2013
prompt$ psql -U postgres
postgres=# show timezone;
TimeZone
----------
GMT
(1 row)
postgres=# select now();
now
-------------------------------
2013-10-07 20:32:42.354384+03
(1 row)
Why is it returning it in +03 timezone format? What am I obviously missing here?
EDIT: I solved the problem, but a question still remains. Here is what happened:
I had changed the system's OS timezone, without restarting the postgres server. Previous OS timezone was indeed +03. After I restarted postgres, it worked correctly. But it is a strange situation: postgresql.conf has not any timezone explicitly defined and the client (psql) should should always output timestamps in the timezone reported by "show timezone". So there is still this unexplained question:
Why psql was reporting GMT as timezone setting but displayed timestamps in the OS new timezone. Is this expected behaviour?
This is certainly odd behavior, largely because I would have expected show timezone to show the same timezone as now() showed. My recommendation is try to reproduce the situation and then email the PostgreSQL list or file a bug report. It sounds like you might be able to cause this by changing your system timezone while PostgreSQL is running. A reload or restart might fix the problem.
I also second the notion of watching out for ALTER USER ... SET TIMEZONE, but on top of that you can also ALTER DATABASE ... SET TIMEZONE and even ALTER FUNCTION ... SET TIMEZONE
I've run into an interesting challenge using a PostgreSQL database with the PostgreSQL JDBC driver. It seems that the latest version of the driver, 9.2, uses the client time zone when performing date/time matches.
This becomes a problem when the server (JasperReports Server) is set to UTC and the database server is set to US/Eastern.
If I run the following query from a client set to the UTC time zone I get different results using the 9.0 JDBC driver and the 9.2 JDBC driver.
select now(), extract(timezone FROM now()), current_setting('TIMEZONE'), now()-interval '1 hour' as "1HourAgo"
Results using 9.0 JDBC driver:
now date_part current_setting 1HourAgo
2013-08-26 15:33:57.590089 -14,400 US/Eastern 2013-08-26 14:33:57.590089
Results using 9.2 JDBC driver:
now date_part current_setting 1HourAgo
2013-08-26 15:41:49.067903 0 UTC 2013-08-26 14:41:49.067903
This is causing a WHERE statement in a query to return incorrect results. For example,
WHERE end_time between now() - interval '1 hour' and now()
works as expected using the 9,0 driver but returns no results using the 9,2 driver as the driver appears to be offsetting the value of end_time to match UTC (the client's time zone). The following is a workaround, but an ugly one:
WHERE end_time at time zone 'EDT' between now() - interval '1 hour' and now()
Questions:
Has anyone else run across this before?
Is there an explanation for this change in behavior? I haven't been able to find anything in the JDBC release notes
Any advice on how to work around this other than rolling back the driver to an older version?
Thanks!
I just ran into this issue myself. I verified that the postgres jdbc driver is indeed picking up the connection timezone from the jvm, and I wasn't able to find a way to override this behavior. It really would be nice if they provided a jdbc url connection parameter for this purpose.
As a workaround, I discovered that my connection pool library (HikariCP) can execute a sql statement for each new connection:
hikariConfig.setConnectionInitSql("set time zone 'UTC'");
The use of the local timezone as the default timezone is required by the JDBC standard (and API documentation), and is made explicit by PreparedStatement.setTimestamp. However it also applies to all other areas where JDBC sets or retrieves time related data.
See also my answer to Is java.sql.Timestamp timezone specific?
Short version try:
TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
Hi we ran across this issue with client and server timezone miss match We needed our unit tests to be run using "UTC". By looking at the source code for postgres jdbc driver (and this being test code) we "fixed" it by changing the TZ inside of the jvm before obtaining a connection.
Just in case others struggle with this - you can edit the "conf" file that launches SQLDeveloper and add the following line :
AddVMOption -Duser.timezone=UTC
I found this file on my machine at :
/opt/sqldeveloper/ide/bin/ide.conf
Thanks to #a_horse_with_no_name for pointing me in the right direction with a comment in one of the other answers
I don’t know JasperReports, but generally speaking, using the JSR-310 (Java 8) date/time types (supported by JDBC 4.2) should work without having to worry about time zone mismatches between database server and client.
See Using Java 8 Date and Time classes in the PostgreSQL JDBC driver documentation.
I'm getting a little confused by postgresql timezones
i was checking the dates in some rows and i noticed the timezone -4 in them
but my actual timezone is -3
the government made changes to the daylight saving timezones and the tzdata files where changes
the system date was fine but postgres don't notice the change until i restarted it
i tried setting it with
set TIME ZONE LOCAL
but it sill got the bad timezone -4
select extract(epoch from now()),now();
date_part | now
------------------+------------------------------
1335240339.68894 | 2012-04-24 00:05:39.68894-04
(1 fila)
but after i restarted postgresql
# select extract(epoch from now()),now();
date_part | now
----------------+-------------------------------
1335240403.672 | 2012-04-24 01:06:43.672002-03
(1 fila)
my timezone was always
show timezone;
TimeZone
------------------
America/Santiago
(1 fila)
may i need to restart postgres every time tzdata info is changed?
According to this FAQ entry, PostgreSQL is coming with the latest tzdata database. In order to keep it up to date, one should install minor PostgreSQL releases on a regular basis.
It is also possible to have PostgreSQL compiled with system tzdata database support using the --with-system-tzdata configure option.
In both cases, running server will not monitor for changes in the tzdata databases, so you'll have to explicitly notify it via the restart.