SQL Server and Oracle

is there a SQL server tool or database utility that allows to automatically synchronize data between a table in SQL server and a table(same structure) residing in Oracle on a different server...
Ashish

SQL Server has DTS for this sort of thing. Oracle has Heterogenous Services.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

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  • Different output of same query in SQL Server and Oracle

    I have two tables table1 and table2
    --table1 has two columns c1 int and c2 varchar. there are not constraints added in it. it has data as given below
    c1     c2
    6     d
    5     j
    102     g
    4     g
    103     f
    3     h
    501     j
    1     g
    601     n
    2     m
    --table2 has only one column c1 int. there are not constraints added in it. it has data as given below
    c1
    6
    1
    4
    3
    2
    now when i run below given query in sql server and oracle it gives me different result
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    from table1
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    sql server output
    c1     c2     c1
    1     g     1
    2     m     2
    3     h     3
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    If you notice the first column in both output. It is sorted in sql server and not in oracle.
    Why it is behaving differently in oracle? Is there any way I can solve this in oracle?
    Thanks,
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    It is NOT behaving "differently" in Oracle; you just haven't specified an order that you expect your results to be in, so you're going to get output in whatever order the database fancies displaying it (ie. no guarenteed order). This is an artifact of how the database chooses to put together the data, and different databases (or even datasets within the same database) can and most likely will behave differently.
    Even SQL Server won't guarentee to always get your data in an ordered fashion if you exclude the order by clause, even if you think it has always output the data in an ordered fashion.
    Your solution is to add an order by clause, in BOTH databases, to force the order of the output data.

  • NVARCHAR - NVARCHAR2 datatype mapping between sql server and oracle.

    Question regarding size allocation that occurs for NVARCHAR columns in sql server to NVARCHAR2 in Oracle in the migration tool.
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    Thanks -

    Right - well, that's what I'm suggesting is that NVARCHAR(8) in SQL Server is equivalent to NVARCHAR2(8) in Oracle. Truncation will occur after 8 of any character, including, say, double byte Kanjii characters, which would physically store 16 bytes in the NVARCHAR(8) NVARCHAR2(8) column defn. I tried that in both SQL Server and Oracle, and the behavior is the same.
    Also, technically, NVARCHAR2(8) and VARCHAR2(8 CHAR) is roughly the same in terms of behavior, except that in the first case, the physical storage is 16 bytes, while in the second case, it's 24 bytes (to account for 'supplemental' characters or true UTF-8 compliance). Same truncation occurs after 8 of -any- character be it single byte ascii or double byte kanjii, which is the behavior I expect.
    Thanks for looking into this. What I decided to do was the following:
    What was originally defined in SQL Server as varchar (and translated to VARCHAR2 with the CHAR designation), I removed the CHAR designation since I truly want that number of bytes to be stored, and not characters (for columns I do not care about UTF8 or 16 compliance - that will also mimic the same behavior I currently have on the SQL Server side. For anything that was nvarchar in SQL Server, I went ahead and created them as VARCHAR2 with the CHAR designation, with the same size (not double the value as was in SQL Server which the documentation says it gets translated to). I did this since we probably will need true UTF-8 compliance down the line, and since I had the hood open, it was easy enough to do. I could also have converted NVARCHAR(n) to NVARCHAR2(n) (and not n*2) as what was happening in the migration.
    I tested strings in both cases, and I think I have my solution.
    Edited by: kpw on Sep 24, 2008 11:21 AM

  • Compare SQL Server and Oracle syntax

    Hello, I am very new to the Oracle DB as I have been working with MS SQL Server for many years. I have a SQL statement that works fine in MSSQL but seems to not work in Oracle. Is this a syntax problem or do I need to look elsewhere?
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    SQL Server and Oracle are two completely different RDBMS'.
    You'd be best not to try and port SQL Server code to Oracle SQL or PL/SQL directly as it will not favour the power of Oracle's features correctly.
    I'm not sure what your code is supposed to be doing (I find SQL Server code awful to read, and never understand the need for "@" before variable names, that just seems to show a lazy parser (or lazy coder who designed the parser)).
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    zulfgi

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    Hi All
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    How would one go about doing such a thing?
    Many Thanks
    Kubilay.

    Hi Matt and Thomas
    Many thanks for your replies.
    Yes I have to do the join. Even worse I have to write an Aggregate query like this!
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    I can not put them side by side on the dashboard, as I need to aggregate the data and present it maybe in a Oracle BI Report for Accounting and Financial reconciliation purposes.
    The truth is, as it is. I can't change it, is too late.
    I have to device a way to harvest both systems as they are. I don't want to move around data. I thought looking at Oracle BI I could write SQL against multiple Data Sources. I am struggling to find a way. As it seems that it can "SQL query" 1 data source at a time.
    I have been hinted on another forum (OracleTURK) to use Oracle Transparent Gateways and Generic Connectivity. http://download.oracle.com/docs/cd/B19306_01/server.102/b14232/toc.htm
    Shame, I have to pay licenses for OWB and Oracle Transparent Gateways. I thought DB vendors can do better. Why do I have to pay to access the other 50% of the market.
    I can understand the performance implications this might have. Because of it I might even be forced at the end to move data (ETL) into a separate database, slice it into partitions and manage it that way. Pitty because currenlty I only need one report out of these systems but seems like will be dear to get.
    Thank you for all your help.
    Kubilay

  • Dual contection between SQL Server and Oracle 10g

    Hi.
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    user650358 wrote:
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    I am migrating SQL Server database to Oracle database by using Oracle Workbench.
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    Thanks

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    My problem with converting MS SQL Server queries in a SQL Pass-thru is becoming critical at my job.
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    Your bet is right as SQL-Server's SQL implementation is not the same as Oracle's SQL implementation. There are numerous differences. Translating one to the other is not a 1:1 keyword swap.
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  • Capture Changes from Sql Server  using Oracle Streams  - Destination Oracle

    Is it possible to capture changes made to tables in Sql Server database and propagate the changes to Oracle Database using Oracle Streams and Heterogeneous Gateway. I see plenty of information about pushing data from Oracle to Sql server, but I haven't been able to find much information about going the other way. Currently we are using sql server 2005 replication to accomplish this. We are looking into the possibility of replacing it with streams.

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