I have an application that stores data in an Oracle database. I want to copy selected rows from a table in this database to a table in a Sybase database (archiving records). Can I do this directly (i.e. without storing and loading results from a file)?
I've mostly looked into SQL*Plus
SQL*Plus COPY Command (http://docs.oracle.com/cd/B19306_01/server.102/b14357/apb.htm)
Copying Data from the Oracle Database Server to Sybase (http://docs.oracle.com/cd/A95432_01/a80982/ch5.htm#153526)
Copy Command (http://www.oracleutilities.com/SQLPLus/copy.html)
Oracle® Database Gateway for Sybase User's Guide (http://docs.oracle.com/cd/B28359_01/gateways.111/b31048/toc.htm)
I also understand the following: "However, INSERT is the only option supported when copying to Sybase. The SQL*Plus COPY command does not support copying to tables with lowercase table names." However, I haven't been able to do this in SQL*Plus. I'll keep trying, but if anyone has an example of how to do it here, I'd very much appreciate it.
If this is not possible, is Oracle Data Pump (http://www.oracle.com/technetwork/database/enterprise-edition/index-093639.html) my best alternative?
Thank you!
Sincerely,
Deepyaman
Your best bet may be to use some form of ETL tool to handle this if the size of your data is reasonable, rather than getting into the details of setting up the gateways, etc, between systems.
There are many options - Talend Open Studio (free), Informatica, or Microsoft SSIS all should be able to handle this.
The robust way to do this is create a flat file(txt,csv) or an INSERT sql from your "COPY_FROM_DATABASE". And then load it into corresponding table. You might have to do a bit of formatting in this sql in order to run it on a different server. I personally like INSERT sql better.
Related
I need to do some data migration between two oracle databases that in different servers. I've thought of some ways to do it like writing a jdbc program but i think the best way is to do it in SQL itself. I can also copy the entire table over to the database I am migrating to but these tables are big and doesnt seem like a "elegant" solution.
Is it possible to open a connection to one DB in SQL developer then connect to the other one using SQL and writing update/insert functions on tables as if they were both in the same connection?
I have read some examples on creating linked tables but none seem to be oracle specific or tell me how to open the external connection by supplying it the server hostname/port/SID/user credentials.
thanks for the help!
If you create a Database Link, you can just select a from different database by querying TABLENAME#dblink.
You can create such a link using the CREATE DATABASE LINK statement.
It depends if its a one time thing or a normal process and if you need to do ETL (Extract, Transform and Load) or not, but ill help you out based on what you explained.
From what i can gather from your explanation, what you attempt to accomplish is to copy a couple of tables from one db to another, if they can reach one another then its really simple, you could just create a DBLINK (http://www.dba-oracle.com/t_how_create_database_link.htm) and then do a SELECT AS INSERT from either side using the DBLINK for one of the tables and the local table as the receiver or sender. Its pretty straight forward.
But if its a one time thing i would just move the table with expdp and impdp since that will be a lot faster and a lot less strain on the DB.
If its something you need to maintain and keep updated, why not just add the DBLINK and use that on both sides, this will be dependent on network performance though.
If this is a bit out of you depth or you cant create dblinks due to restrictions, SQL Developer has had a database copy option for a while and you can go as far a copying individual tables, but its very heavy on the system where its being run (http://deepak-sharma.net/2014/01/12/copy-database-objects-between-two-databases-in-oracle-using-sql-developer/).
Is there a way in Oracle 11g to dump database to sql script, that when run will perform database, users, tables and data creation?
In Microsoft SQL Server there's SSMS Toolpack that is capable of such thing. (Script all data from SQL Server database) I'm interested whether the same is possible in Oracle 11g.
To extract metadata and data you should look at data pump, specifically the export and import tools. This will be the simplest, fastest and most supported way to move everything.
You will need to already have created the database, but I'm not sure if you're confusing that with the Oracle schema. Which you will also have to create in advance by creating the user(s) that will own all the objects. You can extract a script to create the user/schema, e.g. from Toad or SQL Developer, or using the DBMS_METADATA package.
Most client applications also have options to export pretty much everything as scripts. In SQL Developer, for example, go to the Tools menu and there's an 'Export database' option where you can choose what you want to include, which will be pretty much everything in your case. You'll still need to pre-create the new database to run those scripts against.
Firstly, let me apologize for the title, as it probably isn't as clear as I think it is.
What I'm looking for is a way to keep sample data in a database (SQL, 2005 2008 and Express) that get modified every so often. At present I have a handful of scripts to populate the database with a specific set of data, but every time the database is changed all the scripts have to be more or less rewritten and I was looking for some alternatives.
I've seen a number of tools and other software for creating sample data in a database, some free and some not. Are there any other methods I haven’t considered?
Thanks in advance for any input.
Edit: Also, if anyone has any advice at all in dealing with keeping data in sync with a changing application or database, that would be of some help as well.
If you are looking for tools for SQL server, go visit Red Gate Software, they have the best tools. They have a data compare tool that you can use to keep lookup type tables up-to-date and a SQL compare tool that you can use to keep the tables synched up between two datbases. So using SQL data compare, create a datbase with all the sample data you want. Then periodically refresh your testing db (or your prod db if these are strictly lookup type tables) using the compare tool.
I also like the alternative of having a script (you can use Red Gate's tool to create scripts) because that means you can store this info in your source control and use it as part of a deployment package to other servers.
You could save them in another database or the same db in different tables distinguished by the name, like employee_test
Joseph,
Do you need to keep just the data in sync, or the schema as well?
One solution to the data question would be SQL Server snapshots. You create a snapshot of your initial configuration, so any changes to the "real" database don't show up in the snapshot. Then, when you need to reset the table, select from the snapshot into a new table. I'm not sure how it will work if the schema changes, but it might be worth a try.
For generation of sample data, the Database project in Visual Studio has functionality that will create fake/random data.
Let me know if this make sense.
Erick
I'm trying to find out if this is possible, but so far I haven't found out any good solutions. What I would like to achieve is write a stored procedure that can clone a database but without the stored data. That means all tables, views, constraints, keys and indexes should be included but without any data. Can it be done?
Sure - your stored proc would have to read the system catalog views to find out what objects are in the database, determine their potential dependencies, and then create a single or a collection of SQL scripts which re-create the database, and execute those.
It's possible - not very nice and easy to do. Especially the dependencies between objects might cause more headaches than first meets the eye....
You could also:
use something like SQL Server Management Studio (if you're on SQL Server - you didn't specify) and create the scripts manually, and just re-execute them on a separate server
use a "diff" tool like Redgate SQL Compare to compare two servers and have the second one brought up to date
I've successfully used the Microsoft SQL Server Database Publishing Wizard for this purpose. It's pretty straightforward, no coding needed. Here's a sample call:
sqlpubwiz script -d DatabaseName -S ServerName -schemaonly C:\Projects2\Junk\ DatabaseName.sql
I believe the default is to create both data and schema, but you can use the schemaonly parameter.
Download it here
In SQL Server you can roll through the system tables (sys.tables, sys.columns, etc.) and construct things one at a time. It's going to be very manual and error prone at the beginning, but it should become systematic pretty quickly.
Another way to do it is to write something in .Net using SMO. Check out this link:
http://www.sqlteam.com/article/scripting-database-objects-using-smo-updated
Are there any good database schema comparison tools out there that support Sybase SQL Anywhere version 10? I've seen a litany of them for SQL Server, a few for MySQL and Oracle, but nothing that supports SQL Anywhere correctly.
I tried using DB Solo, but it turned all my non-unique indexes into unique ones, and I didn't see any options to change that.
If you are willing to download SQL Anywhere Version 11, and Compare It!, check out the comparison technique shown here:
http://sqlanywhere.blogspot.com/2008/08/comparing-database-schemas.html
You don't have to upgrade your SQL Anywhere Version 10 database.
The new kid on the block is Qwerybuilder. It supports SQL Server, Sybase ASE, Sybase SQL Anywhere and Oracle. I've used it successfully with SQL Anywhere to track schema changes.
Two I've come across that support SQL Anywhere:
Upscene Database Workbench - http://www.upscene.com/products.dbw.sqlanywhere.php
Aquafold - http://www.aquafold.com/index-sybaseany.html
Each one appears has a schema comparison tool, however I have not used either to compare schemas.
SQLDelta is awesome. It is for SQL Server. I've used it with SQL 2000 and 2005. It will compare stored procedures, tables, views, permissions, indexes, etc. It can also compare data between tables I believe. You can sync the changes or generate SQL Scripts for later use. I use it often to script out db changes in development to production.
Ah...missed the Sybase remark. Not sure if SQLDelta can talk to it..but I'd probably give it a shot since Sybase is similar.
Try erwin (CA AllFusion ERwin Data Modeler). It supports quite a lot of different DBs, including SQL Anywhere, and is quite good in reverse/forward engineering and schema comparison. However, you may find it a bit too complex to use for the comparison...
I use SQL Data Compare from Red Gate along with SQL Compare the data compare allows you to Compare the contents of two databases and Automatically synchronize your data.
SQL compare allows you to do the same but with the database tables. Nice GUI on each and very easy setup. they also work on a remote database.
There not cheap but each has a 30 trail so you can get a feel if you like it or not.
Sybase PowerDesigner can also Compare or Merge your Database Schema.
It can also Load the Schema from various Databases by ODBC if you have Schema generation Scripts you can also load them into a Model.
Its an expensive tool but great to document and develop you schema changes IMHO.
Breck Carter's idea is a good one. For quick scans, I have an old product that is called DBDelta. I have it installed on an old Windows 2000 machine because the install I have will not work on an XP machine. It's a very small app that compares two SQL Anywhere databases across an ODBC connection.
I've done some searches to try and find a later copy, but have not been able to. The developer was Charles Butcher. I think he supported it for a while and then stopped back in 2002 or so.
I'll continue to look for a link. If I find something I will post it here.
QweryBuilder 5.5.0 will allow you to compare all procedures, functions, views, tables and triggers in one shot. This release is scheduled for mid May, 2010.
It hasn't been finalized yet but we are also looking at adding an option to turn the diff results into a script that can be executed on a target database.