Replication :: Breaks When Subscribers Updated
May 10, 2012
i am more than ready to RTFM, if any of the members give me the right pointers to proceed. My company has a replication issue, which my manager asked me to check anything i can. This can be pure architectural question where i will have redesign the application, i am also ready to read on any design patterns and change code
Basically, we have a Primary Publisher in US and the Subscriber in UK. I am told that the replication setup is MASTER - MASTER. Any updates in US will update the servers in UK and vice versa. The .Net application is client machine hosted application which does the changes in the local server respective to its geographical domain i.e applications running in U.K will update the U.K server only. Once the update is done, the data is replicated to other server. It works well most of the time, but sometimes when the user is updating the same record in US and U.K at the same time. The Replication breaks, since before updating either server, if the row in the table is in different due to an user update, replication breaks.
point me to any solutions either Oracle Replication design wise or .net application design wise.
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Oct 9, 2012
The document says "Propagators are also useful for distributing replication loads in configurations that involve a master database that must replicate to a large number of subscribers".
Link [URL]........
My question is how do we define this " large number ". Is 5 a large number or 10 a large number ? I've a bidirectional legacy replication scheme wherein a node replicates to 10 other nodes. Should i introduce Propagator between these nodes.
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Oct 22, 2012
I'm working on a plsql program and i'm using collections. I loop the collection and delete rows of it depending on the edits of my program. Here is the question.
if my collection holds
rows
[1]value
[2]value
[3]value
i can simply do something like FOR indx in invoice.first..invoice.lasthowever if i delete row 2 of my collection i get an error. no data found.
ive been researching this site
[URL].......
rows
[1]value
[3]value
[4]value
is there a way to tell plsql i just want it to loop the collection from top to bottom regardless of the index values?
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Sep 9, 2013
I have a simple column in a table which store a description. This can include line breaks so when you select from it, it looks similar to below
'Part number: X
Batch: Y
Size: Z'
I would like to be able to create a view (so not having any impact on the original data) to return it as below
'Part number: X Batch: Y Size: Z'
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Nov 3, 2013
I am using textarea item to enter and save data into table but saved data doesn't retain all formatting eg line breaks so how can i format the text entered in the textarea so it retains line breaks when saved in the table or sent in the email via APEX_MAIL.SEND... in APEX 4.1.1,
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Feb 22, 2012
Actually am trying to replicate two db servers from one in hong kong and another in china. when am trying to establish the replication, am getting error 'ORA-04052: error occurred when looking up remote object' like this...
but the same way i have tried in my local network, it is working fine.i have tried schema replication through enterprise manager grid control..
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Apr 1, 2010
what are the recommended network requirements for implementing Oracle Multi Master replication.
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Sep 4, 2009
i need to set up a central server with all the master tables and two other local database which will hold the updatable materialized view of the master table...the databases must be synchronized with central server..and user will work on the materialized view database...
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Aug 21, 2008
I want to set up advance replication for 3 master site (multimaster) I created 3 master site named orc1,orc2,orc3 and followed up oracle replication management of API book instruction I created 2 tables(tes1,test2) in hr schema in all 3 master site with the same data. then I created the following steps
1-CONNECT repadmin/repadmin@orc1
2-Create the master group named hr_test_repg
BEGIN
DBMS_REPCAT.CREATE_MASTER_REPGROUP(
gname => 'hr_test_repg');
END;
/
4-add tables test1 and test2 to the group
BEGIN
DBMS_REPCAT.CREATE_MASTER_REPOBJECT(
gname => 'hr_test_repg',
type => 'TABLE',
oname => 'test1',
[code]....
I could create DBMS_REPCAT.GENERATE_REPLICATION_SUPPORT for test2 but not for test1 and it produces error
RROR at line 1:
RA-23309: object hr.test1 of type TABLE exists
RA-06512: at "SYS.DBMS_SYS_ERROR", line 105
RA-06512: at "SYS.DBMS_REPCAT_MAS", line 2552
RA-06512: at "SYS.DBMS_REPCAT", line 562
RA-06512: at line 2
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Aug 4, 2009
I have one 10g database in other country. I want part of their db (selected tables or tablespaces) and import that data to my 10g DB and i want keep to date this data.
I know two ways
1. Data Pump Imp/Emp via FTP, but i can't send only data that have changed (incremental), i must pumping whole selected part of database (i want only new data from their DB, but consistanse with my DB)
2. RMAN etc. or other archivisation tool, i can do incremental achivisation, but can i send files to another instances (my db) and load only that data? Can i do that with SQL*Loader?
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Aug 22, 2010
For using replication in our production, here i am testing golden gate as replication tool. I tested all scenario in Uni direction ( source to destination). Now have to test replication with DDL support in Bi-Direction. Not getting any Doc for doing replication in Bi-direction( Two Way). If any one has done the same, then please share limitation of replication in Bi-direction through Golden Gate.
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Oct 14, 2008
I have 8 databases in a multi master replication. I want to refresh the tables in the replication.
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Jan 28, 2011
I Have configured the replication between two database's at table level. After few miniuts of successful configuration of replication between two db's at table level, I am getting the ORA-00001: unique constraint (%s_PK) violated error in dba_apply_error.
I checked constraint name,type and status on table replicated is same on both source and destination db.
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Jul 26, 2008
I am implementing one-way replication between 2 databases.
Do people leave the target database in archive-log mode? Do they backup the target database?
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Apr 1, 2013
How can i make replication at one way For destination only. Not for destination and target.
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Sep 17, 2008
I need to do a Oracle replication between databases. One resides on Oracle 8i which needs to be replicated to a database on Oracle 10G.
Is oracle replication supported between dissimilar versions of Oracle?
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Oct 28, 2009
I am using prebuilt MV to perform replication of about 300-400 master tables from one database to another database. I am wondering about the impacts on triggers in general replication.
IS there a general rule to enable/disable a trigger before a refresh.
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Apr 9, 2012
I want to configured A Synchronous replication in oracle 8i. Noe using GUI i am bale to create replication but whatever i modify it remain in the transaction i have to manually run the job ,
I also tried to configured continuous asynchronous configuration by setting delay rate 500000. but it was also not working.
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Feb 11, 2010
Is it possible to replicate table data on real time from sql server (2005 32 bit or sql server 2000 32 bit)to oracle 10g running on linux 64 bit? If yes then what are the steps.
It will be one way replication from sql server to oracle. Which option is best sql server dts or Oracle Stream replication to replicate table data.
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Sep 3, 2012
I have a problem where my record is updated yesterday. How to get the record before updated?
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Dec 3, 2007
We have two ORACLE-Standard-Edition installations, one is installed on a machine in our production department and one is installed on an central server. We want to replicate the data from the production-DB to the central server to backup the data on tape drives.
Is this possible using the feature of standard edition?
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Jan 14, 2011
I need to set up replication between three 10g R2 databases.There will be one main database where the data will flow into two small databases. A little bit of information will flow back from these smaller databases into the main one.
I have been asked to evaluate ODI as an option. Unfortunately I cannot use Golden Gate due to the cost.I've had a play with ODI and it looks like it's all done on a GUI where I would much prefer to be using command line scripts for setup and monitoring.
It also looks like ODI is more geared to integrating data from many different sources but I'm just going from Oracle to Oracle so don't know if it's a bit overkill.
I'm thinking of just looking at CDC which I can set up with scripts and looks to be the basis behind ODI anyway (when it comes to taking data from Oracle) - again. I may even go down the streams route that I have used before.
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May 9, 2011
There is a xxxxx.sql file in the OS level which contains create or replace trigger script. I modified that file with the code below:
if(upper(USER)= 'U_USER') then
execute immediate 'alter session set current_schema=USER';
end if;
after that, I went to sqlplus
and logged in to U_USER like this
SQL>conn U_USER/U_USER;
connected.
SQL>@xxxxx
some numbers are getting generated if i press enter.
Then i press ctrl +c and get to sql prompt.
I issue
SQL>select SYS_CONTEXT('USERENV','CURRENT_SCHEMA') FROM DUAL;
I am getting the output as U_USER but I must get the output as USER and not as U_USER. Basically the trigger is not getting updated.
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Apr 11, 2012
I want to know that How to find which table got last updated and how to find last DDL and DML operation obtained in which table? here I know the table name
SQL> SELECT LAST_DDL_TIME FROM DBA_OBJECTS WHERE OBJECT_NAME='PREM';
LAST_DDL_
---------
20-MAR-12
SQL> TRUNCATE TABLE PREM;
Table truncated.
SQL> SELECT LAST_DDL_TIME FROM DBA_OBJECTS WHERE OBJECT_NAME='PREM';
LAST_DDL_
---------
10-APR-12
Note: With out enable the auditing I want to know that .
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Jul 17, 2012
write a query find which rows of a table is updated on 2 days before?
(OR)
In table there r so many rows write a query which two rows r updated last two day before?
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Apr 2, 2011
I wanted to know if there is a way to keep track of what is being inserted/updated in the database currently.
I tried psoug website and SQL_Trace at orafaq (I cannot post the links) but those are useful when you want to see what happens with your queries in a session... When I tried to modify an outer session by its id I couldn't find any trace file that could've been generated (and its impossible to change "tracefile_identifier" in an outer session)
There is an application that is customized by me and it inserts some additional records into the DB in its backend functionality to which I do not have an access (I mean I don't have any source of the backend code), so if I need to see what are the inserts being made, I have to do that directly from the oracle level. I've heard that it is possible and easy to do in MySQL (but I never used that DBMS).
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Dec 8, 2011
I Have a table with 100records.after sometime i updated some records . But after that i want to know how many (count of) records got updated
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May 20, 2011
I have a promotion table which is having 3 columns.
PROMOTION_ID
display_name
ASSET_VERSION
This ASSET_VERSION
field keep on getting updated by other system where they may update the display name of the promotion_id.The main concept of this table is there will be a unique combitination of asset_id and promotion id.
Promotion_idDISPLAY_NAME ASSET_VERSION
123 1ST VERSION 1
123 2ND VERSION 2
123 3RD VERSION 3
456 1ST VERSION 1
456 2ND VERSION 2
456 3RD VERSION 3
789 1ST VERSION 1
789 2ND VERSION 2
789 3RD VERSION 3
So,my requirement is that i have the fetch promotion_id ,display_name that is having highset asset_version.
The OUTPUT SHOULD BE:
Promotion_idDISPLAY_NAME
123 3RD VERSION
456 3RD VERSION
789 3RD VERSION
I need a single sql for this .
Driver used: oracle.jdbc.xa.client.OracleXADataSource
Orcale version: 11G
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Jul 16, 2013
I want know how the values in view DBA_FEATURE_USAGE_STATISTICS gets updated i have already checked the metadata of this view but unable to find how / when the values are being updated.
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Jan 11, 2011
I'm having a bit of a problem getting the syntax of a trigger right. Unfortunately, I have no DBAs locally, I use some third party software, and for reasons beyond my understanding, I have been told to use triggers, and not stored procedures, so I'm running with it.
The set up:
STRUCTURES table: contains several columns, one of which is the unique ID column.
ASSAY table: contains several rows, also with the same ID column, but can have more than one row per ID (several assays per compound). One column is XC_ASSAYS.
The idea of the trigger is basically: When a row in the ASSAYS table is updated, pull out the ID of the row, then calculate the average of the XC_ASSAYS columns for those rows, and report it to the STRUCTURES.XC_ASSAY column for that row ID.
My best attempt thus far results in compilation errors.
CREATE TRIGGER INHIB_W_ALA_TR
AFTER INSERT OR UPDATE ON ASSAYS
FOR EACH ROW
BEGIN
UPDATE STRUCTURES SET XC_ASSAY = (SELECT AVG(XC_ASSAY) FROM ASSAYS WHERE ASSAYS.ID = :NEW.ID) WHERE STRUCTURES.ID = :NEW.ID
END;
/
The resulting errors are:
LINE/COL ERROR
-------- -----------------------------------------------------------------
2/1 PL/SQL: SQL Statement ignored
2/190 PL/SQL: ORA-00933: SQL command not properly ended
12/0 PLS-00103: Encountered the symbol "end-of-file" when expecting
[code]...
I don't understand some of the errors, such as why line 2 SQL is ignored (it seems correct?), or I'm supposed to properly terminate the trigger (I've read ; and /, but I'm getting the end-of-file errors when I do so). Tried shuffling syntax and ' or " around - and I can't get it.The body SQL works when I replace :NEW.ID with an actual variable (such as 'NMP12'), but I'm not sure how to pass the ID variable from the updated row into the body. The ID is not updated, but other columns are.
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