I'm very newbie for Oracle and very not sure about Oracle.
one question I want to know.
if I want develop oracle windows application. first I must install oracle on server for database server but I'm not sure if I don't want install oracle on client. I must install oracle for client YES or NO !?
thank for help.
Yes. The Oracle client must be installed on any machine wishing to access the database. The components of the client you need to install will depend on the method your application using. eg. OLEDB, ODBC, etc.
The answer is 'it depends' - your software will need some kind of client-side driver or library for communicating with Oracle, but there are many ways you can do this.
1) Compiling Oracle's SDK libraries directing into your application.
2) Using a locally installed SQL*Net client (which can be shared between different local applications, so that things like TNS_NAMES setup can be shared).
3) Using third-party libraries embedded in your application.
Also the different kinds of clients can expose or restrict different levels of functionality.
You can install Oracle DB and Oracle Client on same Machine. In below order:
Oracle DB
Oracle Client
Do not forget to do an ADMIN Share prior to install Oracle DB.
To Answer the general question; You have to install Oracle Client on any machine needed to connect to the Oracle Database.
Related
Wonder if this can be achieved. Install Oracle APEX onto a Linux VM and have Oracle DB residing on a separate server to point to it. Is it possible to install Oracle APEX without Oracle currently installed on the same box? Can't find any documentation on the Oracle site for this setup.
No. Application Express (APEX) runs out of the database itself. APEX is a collection of PL/SQL packages and tables.
Now the web tier could most definitely be moved to another machine (linux even). That would be something like Oracle REST Data Services and Apache Tomcat.
I'm trying use Microsoft SSMA for Oracle to migrate a database onto Azure SQL, but I can't get it going. I've double checked the server name, server port, Oracle SID, password... everything. No matter the type of entry screen I use, I can't get it to connect to the on-premise Oracle instance.
I'm pretty sure the login information is all correct, and I should have a working connector to Oracle since I connect to it from TOAD on a daily basis. I tried installing Oracle libraries per previous posts but not sure if I did it successfully because the issues still remains.
What are the troubleshooting steps I should take in order to make this work?
Log in screen:
Error 1:
Unable to find specified provider.
Compatible Oracle Data Access Connectivity libraries were not found on the machine. You can install them from Oracle product media or download it from Oracle web site.
Error 2:
Connection to Oracle failed.
ORA-01017: invalid username/password; logon denied
Error 3:
Connection to Oracle failed.
Network Naming: No LDAP server detected or configured
After a few more days of debugging, I was finally able to get SSMA to work. This answer helps to document my solution for personal use, as well as hopefully answer anyone else's question in the future.
After looking at the list of prerequisites to have SSMA running, I saw that I needed to have a correct Oracle client running. After some internal discussion, it was likely that the Oracle client SSMA needed was different than the one my computer already had for TOAD. The .Net provider for the TOAD connectors was probably not useful for SSMA.
We run Oracle 11g but I had to install Oracle 12c because 11g did not support Windows 10 apparently. Not too much of a roadblock here.
I found this guide to install Oracle client 12c pretty helpful. Shoutout to my alma mater.
Unfortunately the installer kept freezer, but using this former post, I was able to bypass it with the windows command:
setup.exe -ignoreprereq -J"-Doracle.install.client.validate.clientSupportedOSCheck=false"
After that, I saw different error messages when trying to connect SSMA. I kept trying different options with my logins until it worked. Provider: OLEDB Provider, Mode: Standard.
After being granted the appropriate permissions, I was finally able to access our internal tables and objects.
It was a pretty annoying question with a lot of rabbit holes along the way, but it was definitely worth it, being able to translate all our Oracle schemas to Azure SQL with a few clicks. Hope this helps!
Make sure to validate all steps mentioned below before going to install Microsoft SQL Server Migration Assistant for Oracle.
Make sure you have already installed SQL Server instance that will host the migrated database. Also keep in mind that you are not installing SQL Server Express edition to host the migrated database.
You must have sysadmin account to install SQL Server Migration Assistant for Oracle.
Make sure to install SSMA for Oracle on the server that will host newly migrated database on SQL Server.
It is recommended to install Oracle client software on your target system where SQL Server Instance is running.
Make sure your windows server has Microsoft Windows Installer 3.1 or a later version. Port 1434 should be open.
For more details, You can reference: How to Install SSMA for Oracle to Migrate Oracle Database to SQL Server.
Here's the Azure Database Migration Guide: Migrate Oracle to Azure SQL Database. As you prepare for migrating to the cloud, verify that your source environment is supported and that you have addressed any prerequisites. This will help to ensure an efficient and successful migration.
Connect to Oracle with Oracle Client Provider.
Azure also has other way can help you migrate Oracle database to Azure SQL database, such as with Azure Data Factory. If you still has the connect error. I think you can try to use it. Please reference this tutorial: Copy data from and to Oracle by using Azure Data Factory.
Hope this helps.
What is the Difference Between Oracle lnstant Client and Oracle Client ? Could you explain me ? Thanks
Oracle client comes with an installer and a lot of executable like
sqlplus, tnsping, it's complete and huge.
Oracle Instant client is a basic lightweight client which can be
unzipped in a location without any installation, it contains only the
communication layer to be able to connect to oracle. It can be
extended by adding for example sqlplus which ships as a separate
executable. When using Instant Client, just unzip it to a location,
set your ORACLE_HOME environment variable to this location and you
are ready to go.
I am a little lost with the current documentation I have.
I am trying to access an oracle server within a Network, using a Debian Box. Ideally, what I'd need to do is to cron job something into SQL plus, so it performs periodically.
My scripts are ready, but I am not sure how to do the instalation part, or what to install in order to get access to SQLPlus. Does I need the full-fledged oracle client? Oracle XE? Will SquirrelSQL work?
Thanks a lot!
You just need the Oracle client, not the full database install. You can download it here. From the sound of it, you don't need the full client.
I'm from MySQL background and am new to Oracle. I want to know
What is meant by Oracle Client?
What is its use?
What is its equivalent in MySQL ?
Thanks
What is meant by Oracle Client?
and
What is its use?
In this context, a client is a class library (DLL) that allows you to connect remotely to the underlying database of an application. A client, always within the same context, can also be called a .NET Data Provider.
You may have multiple data providers based on the underlying database engine with which you're working.
There was System.Data.OracleClient (deprecated), provided by Microsoft.
There is Oracle.Data.Client, which is actually the best ever built Oracle Client, or Oracle .NET Data Provider. You may also download the latest Oracle 11g Data Provider for .NET.
So, when accessing the Oracle underlying database, make sure your work with this provider, proper for your version of Oracle, and start doing ADO.NET with your favorite database! =P
There are also some other tools that you can work with that will ease your data access code pain, such as Enterprise Library or NHibernate, both are frameworks to basically accessing databases.
Enterprise Library can do even more then that!
And NHibernate is an ORM (Object/Relation Mapping) tool that can work just very fine with Oracle.
Remember though, always use Oracle.Data.Client namespace in the Oracle.DataAccess.dll assembly.
What is its equivalent in MySQL ?
As the equivalence for MySQL, I guess it would be MySQL Connector/NET.
It is the Oracle binaries installed that allow communication with the Oracle database. It can be using SQL*Plus, JDBC (type II or IV) or OCI (Oracle Call Interface).
Its a piece of software that allows a remote computer to talk to Oracle. If you were to write a piece of software that communicated with the database, you would use the Oracle Client to facilitate that communication