I have database on apex.oracle.com and I want to make a connection to airflow.
This answer didnt help me: How to Connect Airflow to oracle database
How to find the sid of my database?
I googled after alot of search I found a answer. Which was giving an error.
I executed this
grant select on v_$sql to username;
This gives an error:
ORA-00933: SQL command not properly ended
Please help me in complete detail if possible.
What should be entered in host name? I don't have any hosting platform. Should database need to be deployed or hostname can be found for a database created on apex.oracle
As far as I can tell (which doesn't have to be correct), give up. Database on apex.oracle.com isn't accessible from the outer world. As stated,
This site (apex.oracle.com) is intended only for the customer
evaluation of Oracle Application Express.
so - you should use it to test your Apex skills and nothing more. If you need to use a database, download and install your own copy - it is available on the Oracle Technology Network, free for evaluation purposes.
Or, consider contacting one of database hosting companies, if you want to access it on the Internet.
Related
I'm trying to create a new connection on the Oracle SQL Developer tool but I'm not able to. I just simply download the latest version of oracle SQL developer tool from the oracle site and unzip the folder and run. I haven't set any password or anything because there is nothing to do so.
Please guide how I can make a local connection on oracle Sql developer tool.
Well based on what you have described, you only installed SQL Developer, without having the Oracle Client installed on your device.
To be able to connec to to something in SQL Developer, you need to have a database to which you would like to connect. That basically means that either you need to install one, or you have one available in your System. But I will assume that you are new to this and have no database to connect to.
First things first, you will need to install the Oracle Client. A pretty good example can be found on here. You have a video tutorial which contains a step by step guide.
Once you finished installing the Oracle Client, you can proceed with unlocking the basic HR Schema, or create your own DB Schema. Again, a tutorial on how to achieve this step can be found here.
There are a few steps to follow, but in the end, if you follow them accordingly, you will be able to make a local connection on oracle using SQL Developer. Besides that, both the links will provide you with some explanation as well for each particular task.
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.
I have got a workspace in apex.oracle.com , Now , I want to connect to that database through JDBC from ubuntu-14.04 machine. please explain the steps , From where should I download the drivers and what should be the arguments in
DriverManager.getConnection();
step by step please. Thank you
You will not be able to connect to the database that's supporting the APEX instance on apex.oracle.com. If you are hosting your own instance, it's no different than connecting to any other Oracle database.A quick code snippet can be found here: http://www.java2s.com/Code/Java/Database-SQL-JDBC/TestOracleJDBCDriverInstallation.htm. You will need a password for the user/schema that you wish to connect to. If you don't have one, then talk to your DBA.
BTW, please remember that no production-type application and data should be used on the public APEX instance.
Maybe your problem is (or was) that you cannot connect via JDBC using the users you administered in your APEX workspace.
It seems to me that APEX users are not regular users for DB connections via JDBC. If my assumption is right, then you need to create database user with sufficient privileges to access the workspace tables.
We have a requirement to make our products work on Oracle as well as SQL Server (around which they were originally built). Unfortunately we don't have any in house Oracle development experience to speak of but as a senior dev it has fallen to me to lead the project. So far I have managed to make our app connect to an Oracle database (I'm using Oracle XE 11.2) by using the following connection string:
Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=VS010-ORA11GR1)(PORT=1523))(CONNECT_DATA=(SERVICE_NAME=DEVORA)));User Id=dbo;Password=dbo;
The reason we decided to use this type of connection string is because we do not want to rely on changing tnsnames.ora on every client machine. However, as you can see this specifies an Oracle user and associated password. We also need to provide the ability to use the equivalent of SQL Server integrated security.
According to the literature I have read, to do this I simply need to specify / as the user id and then omit the password portion (as this is ignored anyway for Windows authentication). I also created the user in Oracle, making sure it matched the Windows user, with the following snippets:
CREATE USER "OPS$<DOMAIN>\<user>" IDENTIFIED EXTERNALLY;
GRANT CONNECT,RESOURCE TO "OPS$<DOMAIN>\<user>";
I also checked that the sqlnet.ora file on my local machine which hosts the XE instance and my dev environment contained the line:
SQLNET.AUTHENTICATION_SERVICES= (NTS)
I understood that this would enable my app to connect to the Oracle database uing Windows Authentication. However what actually happens is that I get the following Oracle error message:
ORA-01005: null password given; logon denied
this doesn't make much sense because of course its null - it's supposed to be, according to the tutorials I've read.
The app targets .Net Framework 3.5, we are using the System.Data.OracleProvider and the actual connecting and so on is handled by Enterprise Library 5. Incidentally, I am aware of the deprecation of the OracleClient component but I just want this to work before I go into the extra complexities of changing providers.
Can anyone tell me what I'm missing? Have I chosen the wrong type of connection string? I apologise for any basic mistakes but I have always managed to avoid Oracle until now so my knowledge of it is close to zero.
Many thanks
I had the same problem and solved after adding this to conn. string:
Integrated Security=yes
To expand on the answer above by #Stikut. I tested this out with NHibernate 3.3.3.GA and it works.
user id=/;password=;Integrated Security=yes
Does the SQL syntax differ in any way for SQL Plus and apex.oracle.com
From this article I can assume that it doesn't, but I want to be sure. Is SQL Plus only an environment that is able to connect to an Oracle server ?
I'm asking this because I just started learning Oracle's SQL syntax and I don't have access to my faculty's server from home. The only solution I found so far is Apex since I'm not planning to install a server on my laptop.
Is SQL Plus only an environment that
is able to connect to an Oracle server?
Yes, SQL*Plus is not very useful unless you can connect to an Oracle database server.
I'm asking this because I just started
learning Oracle's SQL syntax and I
don't have access to my faculty's
server from home. The only solution I
found so far is Apex since I'm not
planning to install a server on my
laptop.
If you cannot connect to your faculty's database server from home, you have no choice but to install your own server somewhere. Apex only runs on an Oracle database server.
However, it's not too difficult nowadays, as long as you follow the installation instructions carefully.
Another option is to get a free account at apex.oracle.com. You'll be able to use Apex's SQL interface. I don't think you can connect to it using SQL Developer, though.
Alternatively, you can start up a simple pre-prepared Apex instance on Amazon's EC2. With this option, if you open the relevant port (1521) you'll be able to connect to it using SQL Developer.
The SQL commands are identical. They are all passed directly to the database engine for execution.
SQL*Plus has a bunch of extra commands (mostly for formatting output, but also stuff like dealing with variables and database startup/shutdown).
[Very old versions of SQL*Plus from the Oracle 7 era don't recognize the MERGE command as SQL and would refuse to do anything with it. But I'd hope those versions are all dead and buried by now.]
SQLPlus commands are to manage the SQLPLus environment and have really nothing to do with SQL. They are mostly for formatting output or taking in data that is used with SQL to send to the server.
SQLPlus is a proprietary Oracle product for connecting to Oracle server and issuiung commands. It is being replaced (officially) by SQL Developer.
I strongly suggest you download the free SQL Developer program from oracle:
http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html
it's a great tool for working with sql, pretty easy to get started (install, create a new db connection and start typing sql_ plus does fill in for columns once it know the tablenames.
Also, it can run most sqlplus commands if you want to format output, etc.
A nice visual intro to the oracle schema and useful if you want to write plsql.