SQL & PL/SQL :: Timezone Check Trigger?
Sep 14, 2012
I have an interesting problem. I have a server in the UK and I have three databases globally - UK (FINUKQ1), NY (FINNYQ1) and TK (FINTKQ1). The NY and TK databases will be migrated to the UK server as part of a consolidation project. Obviously, Time Zones and DST are the biggest concern for me.Here was my plan for the implementation (concentrating on Time Zone/DST issues).
Added to .profile:
--------------------
if [[ "$ORACLE_SID" = "FINTKQ1" ]]; then
export TZ="Asia/Tokyo"
elif [[ "$ORACLE_SID" = "FINNYQ1" ]]; then
export TZ="America/New_York"
else
unset TZ
fi
echo "TZ=$TZ"
Once environment has been set start database and listener.
Change database TZ:
-----------------
alter database set time_zone='Asia/Tokyo';
alter database set time_zone='America/New_York';
Check database TZ:
select dbtimezone from dual;
Add trigger:
------------
CREATE OR replace TRIGGER sys.timezone_check
AFTER startup ON DATABASE
DECLARE
[code]...
The trigger was there to put the database in restricted session if it is started in the wrong TZ and an error written to the alert log. The check was done on the dbtimezone and the dbname. Quite simple. Only issue is that it doesn't work as I wanted as dbtimezone and TZ are separate and disparate entities. i.e. I can start the TK database up in UK time (which will be incorrect for this project), and check the dbtimezone and it will show as 'Asia/Tokyo'.
Is there a better way of checking? Any trigger like this to compare TZs etc?
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Mar 8, 2010
What is the trigger which should be used to check certain field value after posting the query.
Example:
I have executed the query and the records are fetched. There is one field I want to check if it is null then it should be enabled, else, keep it disabled.
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Mar 29, 2013
How can I create a trigger to check if synonym already exists in db and if exists then don't create synonym.
my work: ( this is just like an outline i prepared)
select * from all_synonyms;
declare
s_exists number;
begin
-- check whether the synonym exists
select 1 into s_exists from all_synonyms;
-- an error gets raise if it doesn't
exception when no_data_found then
-- DDL has to be done inside
execute immediate ' create or replace synonym';
end;
/
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Aug 24, 2011
I know this is an old thread and I just started working with triggers. I want to check if the data being inserted is already in the table and if not insert it:
create or replace trigger t_triggername
before insert on tbl_tablename
for each row
begin
if(:new.user_id <> :old.user_id) then
insert into tbl_tablename(user_id, location)
values (:new.user_id, :new.location);
end if;
end;
what if I wanted to keep the user but only update location if the user is already in the table. I've tried doing it this way:
create or replace trigger t_triggername
before insert on tbl_tablename
for each row
begin
if(:new.user_id <> :old.user_id) then
insert into tbl_tablename(user_id, location)
[code]...
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Jul 30, 2011
I want to put one check box to check all the check boxes.how can i do this?
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May 23, 2013
I need the timezone of the server that the DB sits on. I don't want the offset. I need the region name. This is because some regions use daylight savings time and some do not. Plus an SA can change the time of the OS. Another company manages our servers and DBs in production and we don't have contact with them. We could use a lookup talbe and just populate it, then update it when we find out what it is in production. The problem is that I have seen cases where the timezone on servers change. Considering the lack of contact between the teams, we really need a reliable way to get the timezone out of the DB.
We tried several ways. My list is below and I explain why this is not working.
examples:
sessiontimezone: this is the timezone of my server. In theory it should be the same as the DB. We cannot take the risk that this will be out of sync. dbtimezone: This gives the offset. Such as -5:00 for US EST. There are multiple regions that have this. Some do not use daylight savings time and some do. We would need America/New York instead.
sessiontimezone gives the timezone setting for the client. This can be altered.
dbtimezone just gives the offset such as -5:00
We get data feeds from different parts of the world. We get some data based data that is local to that regions timezone. We need to partition on this field. So we need to add a field to the DB and normalize it to the time local to our DB Server. So if we get a record from california and the DB is on a server in US EAST, we add 3 hours. The offset won't work...
1. a timezone that we are getting from may not be in daylight savings time. We are partitioning by hour.
2. We would hit daylight savings time in New York before we hit it in California, so we would need to account for that in the math.
This hourly partition is a fixed and hard requirement. We need this to be absolutely accurate.
Here is what we tried:
What I want (pseudo-code): “Select XXX as timezone_region_name” to return “America/New_York” or “UTC”. It may be that the timezone was not set for the database at install time, and if it were, these queuries would work.
-- FAILED
SELECT DBTIMEZONE FROM dual;
--FAILED
select systimestamp, to_char(systimestamp, 'TZR'), extract (timezone_region from systimestamp) from dual;
--FAILED
SELECT systimestamp
AT TIME ZONE DBTIMEZONE "DB Time"
FROM DUAL;
--FAILED
select to_char(systimestamp, 'TZR') from dual;
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Jun 12, 2013
When I try to store the xml as clob with element:
<revisedDate version="1">2013-06-10T11:00:00+11:00</revisedDate>
It is throwing �ORA-01830: date format picture ends before converting entire input string�
But when I insert with
<revisedDate version="1">2013-06-10T11:00:00+05:30</revisedDate>,
it is getting inserted successfully.
PS: my db timezone is +00:00
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Mar 6, 2013
If I run the following query it's executing fine.
SELECT CAST(( FROM_TZ(CAST(SYSDATE AS TIMESTAMP),'CST') AT TIME ZONE ('Japan'))
AS DATE) FROM DUAL;
If I run the following query,I am getting the error.
ORA-01882: timezone region not found
SELECT CAST(( FROM_TZ(CAST(SYSDATE AS TIMESTAMP),'LMT') AT TIME ZONE ('philippines'))
AS DATE) FROM DUAL;
What is the timezone for Philippines.
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Jan 7, 2013
I am using the below query to get time stamp along with time zone format.
>>SELECT CURRENT_TIMESTAMP FROM DUAL
Now the requirement i got is i need to get convert the format in DD-MON-YY, HH:MM:SS, Timezone (GMT or PST)
how to convert this format. Or is there any alternative time stamp option to do conversion.
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Oct 10, 2012
I've written this code to present the problem:
declare
region_date varchar2(100);
region varchar2(100);
offset_result varchar2(100);
begin
region_date := '2013-04-07 01:59 Australia/Sydney';
region := 'Australia/Sydney';
select
to_char(
[code]....
What I want to do is to use the variable "region" for the timezone specification as well,And I seem to be unable to, and don't understand why.....
why when I get an "ORA-00907: missing right parenthesis" with this value,Whereas, it works when I put "AT TIME ZONE 'Australia/Sydney'" there?
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May 24, 2012
I have one issue My server is in france and it is in french timezone but when I query for sysdate it returns US time.
In '/etc/sysconfig/clock/'
Zone= europe/paris
UTC= true
echo $TZ variable is returning nothing.
sysdate = us time
systimestamp= us time
current_timestamp = french time
current_date = french time
dbtimezone= europe/warsove, sessiontimezone=+2.00( which is also europe timezone offset)
tz_offset(dbtimezone)=+2.00, tz_offset(sessiontimezone)= +2.00 i.e europe
os timezone= europe/paris.
This command "./emctl config agent getTZ" is also returning timezone as europe/paris
Also in "emd.properties" file "agentTZRegion" parameter is set to europe/paris
Oracle version= 11.2.0
Now I don't understand why this sysdate and systimestamp is returning "US time zone" while everything else is returning french time zone.
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May 15, 2011
I'm in the process of testing a restore/recover from a simulated full system and media loss. A level 0 backup was taken from the server, and I'm trying to restore/recover to a point in time on a second server. I have created the database (with the same name) and have been able to successfully restore both the controlfile and spfile from the autobackup.
how does RMAN treat the "set until time"? The level 0 was taken on a database/server that is in CST while the database I'm trying to do a restore/ recover to is in EST. So when trying to do a point in time recovery, should I specify the time in EST or CST?
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Jan 20, 2013
I'm going to migrate my current db 9.2.0.8 (Timezone version is 1!) to a new server 11.2.0.3, so I was wondering if I must upgrade timezone version of my current 9iR2 to version 4! Before upgrade it...Btw my new server has timezone v14.
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Aug 31, 2010
How to change db timezone parameter. My application team has asked me to change the db timzone parameter by following sql.
ALTER database SET TIME_ZONE = '+10:00';
Is this way is the correct one , and do we have any impact on database and does it require a db bounce.
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Oct 22, 2011
Order time is not properly displayed in the local timezone format and day light saving calculation is also another issue. Description:
We have web application & a centralized database where users can create orders globally. When orders are created time is saved in UTC format in the centralized global database.
somehow along with the UTC order time, timezone description is also being stored in one of the Database table as
UTC time as: '28-NOV-2010 11:24:54 PM'
Timezone description:
(GMT) Casablanca, Monrovia
(GMT) Greenwich Mean Time : Dublin, Edinburgh, Lisbon, London
(GMT+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna
(GMT+01:00) Belgrade, Bratislava, Budapest, Ljubljana, Prague
(GMT+01:00) Brussels, Copenhagen, Madrid, Paris
(GMT+01:00) Sarajevo, Skopje, Warsaw, Zagreb
(GMT+01:00) West Central Africa
(GMT+02:00) Athens, Beirut, Istanbul, Minsk
(GMT+02:00) Bucharest
(GMT+02:00) Cairo
(GMT+02:00) Harare, Pretoria
(GMT+02:00) Helsinki, Kyiv, Riga, Sofia, Tallin
.....
...
With this information how can I map timezone description to V_$TIMEZONE_NAMES. I read Oracle automatically converts to local timezones by considering day light saving timings when TZNAME is given as input with the datetime. by using above timezone descriptions how can I get TZNAMES which are in V_$TIMEZONE_NAMES.
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Mar 6, 2012
I have a requirement in which a particular a timestamp column (date1) whose values are in CET timezone needs to be converted to EST and day light savings should be taken care of in the conversion logic. I should not use any ddl statements for altering the timezone and all.
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Jun 21, 2012
I have a table with the following columns
EMPLOYEEIDNUMBER(12,0)
PUNCHDTM DATE
TIMEZONEIDNUMBER(12,0)
I want to return any results where any employee id that has 2 different timezoneid's on the same date. I would actually like, if its possible, to select these entries to display on one row per employee per day. So for example
EMPLOYEEID - PUNCHDTM - TIMEZONEID - PUNCHDTM - TIMEZONEID
12345 - 6/20/2012 5:00 am - 123 - 6/20/2012 10:00am - 456
To me who is newer with SQL this sounds like i would be 'joining' the table to itself so i've searched for that but not found what i need.
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Jun 14, 2012
I am having an issue to connect my C++ application to my Oracle DB. When my code calls
oracle::occi::Environment::createEnvironment(),
I get an error "ORA-01804: failure to initialize timezone information".
The application works on other people's Windows machine with their Oracle DB. But it doesn't work from my machine connecting to their Oracle instance. So I guess the issue does not come from my instance but rather from my Oracle dlls maybe?
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0
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Jul 8, 2013
I am tasked to develop and application using Apex 4.2.2.00.11 and Oracle Database 10.2.0.4 on a Windows 2003 Server. This application needs to support different time zones. Briefly, a user in timezone A should be able to create a record with a date in timezone B and the users should be able to view the records in their timezones. What is the best method? Should I maintain a Timezone field for each user site or even per transaction, or is using "Automatic Time Zone" feature in Globalization section of Application Properties sufficient? I have developed Apex applications before, but they did not have to have different time zones, so I am not sure how I should build my database schema. Do you guys store everything as UTC and display values based on user's Timezone setting? I am aware of the Timestamp with Local Timezone data type.
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Jul 1, 2011
How can "call one trigger of item in trigger of form"
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Mar 10, 2010
Can we call trigger in another trigger,if it is possible any example.
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Sep 16, 2010
I have a table in SQL , I am creating a column Of name in it , i want to restrict user to enter name in Capital only ,and i want to create this at table level . I tried Check Operator but failed .
create table my_tab
(U_name varchar2(30) ,
constraint ck_check (U_name = upper(m_name))
/
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Dec 16, 2010
I have a text column having date data. In the format of YYYYMMDD.Some of the records might have invalid date data as well. Is there any function which checks whether it's value is a right DATE? Something like
IS_DATE(my_text_date,'DD-MM-YYYY')
should return TRUE if it's a valid date.
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Jul 6, 2011
I would like to check and make sure that features like partitioning, Tuning, Diagnostics etc. have NOT been used. In Oracle 10 + we have the dba_feature_usage_statistics.
But how can we check this in 9.2 ?
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Jun 18, 2013
i have a procedure like create or replace procedure studrec( a in sid%rowtype)asi sid%rowtype;beginselect sid into ifrom students; i need to check whether sid is exist in the variable i or not
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Mar 6, 2013
I have one procedure which is executing daily two times(i.e morning run and evening run) . In morning run it's executing around 150 mins and evening run executing around 25 mins.
It's happening for all procedures executing in longer run in morning. There is NO LOCKS, I have checked LOCKS while executing morning run. I suspects CPU usage in morning run.
How to check CPU usage ? AND also each session how much utilizing CPU. I'm using oracle 8i database, I know it's older version but my company is using oracle 8i. So i have to look in this database version only.
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Sep 17, 2013
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Oct 12, 2005
I have a script like this:
------------------------------------------------------------
DROP TABLE CON_TEST CASCADE CONSTRAINTS ;
CREATE TABLE CON_TEST (
IDI NUMBER(10,0),
USERID VARCHAR2(10),
PWD VARCHAR2(10),
NOTE VARCHAR(100)
)
----------------------
But i think if table CON_TEST doen't exist, an error message will appear. I know that in SQL Server we can check if table exists or not. So, i wonder if we can do that in Oracle?
By the way, is there any way to run a file script that contents TABLES, STORED, ... on a developed PC connect to oracle db server? (in case, i'm developing on PC, using Net Service Name to conect to Oracle DB Server)
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Sep 6, 2011
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GRANT ALL on my_tableN to USER1;
How can i list all privileges from this user over all tables?
I don't know if this is possible, but i wanna to list:
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Is this possible?
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