I have a vb6 application that uses a Database MS Access in read-only method.
I want to change this database with another, centralized and server side like SQL Server or MySQL.
Actually, into vb6 I use DAO for the connection (I know is an older method and there are better like ADO)
I don't know if is better to create my own API and connect to the data by vb6 or buy a SQL SERVER Cloud (Ex: azure) and connect them by ODBC Connection.
I'm afraid that this connection might be too slow...
What do you advise me to do?
The DB is 5MB of dimension with 500/600 connection every day
Related
I am new to ADF/JDeveloper. I'd like to configure my ADF Web application to Oracle Live Server, since I'm using a Mac computer, which are not supported by Oracle's database distribution, I have tried to use Oracle VM but it freezes my Mac.
Needs information on database configuration panel are:
Host name
JDBBC port
SID
Oracle does not provide database connection information for the database behind livesql.oracle.com. If you want your own cloud database, you should look into setting up an Oracle Cloud Free Tier database. If you configure your database using the Always Free options, you should be able to have your database around for free forever.
I have a database Connection established in odbcad and Microsoft Access (aswell as working in Excel) via ODBC and want to also get it working in Oracle SQL developer.
It is a Windows SQL Server as far as i know and I have tried several Settings, of which None works. I have also installed Driver for ODBC. I would like to Import Settings into SQL developer as applied in MS Access, is there any possibility?
No, SQL Developer is a Java application and uses a JDBC driver.
But if you look at the odbc properties for your connection, those should largely translate to what you need to define a basic connection.
Oracle:
Server name or IP address of the DB, port # for the listener, and the name of the SID or Service, plus a valid username and password is all you need to connect to Oracle.
What error do you get when you try to connect?
Show us what you're trying.
Update:
You're trying to connect to SQL Server but you're getting"
Native SSPI library not loaded
You're trying to use OS Authentication for your connection. For this to work with the jTDS driver, you need to copy a DLL file named ntlmauth.dll (which is for NT authentication) under the jtds-x.x.x-dist\x86\SSO\ or jtds-x.x.x-dist\x64\SSO\, to any directories in the PATH environment.
Please update your question such that's it's clear you're connecting to SQL Server and share the error message so others can find it.
I imagine this question is a duplicate of many previous iterations of the same challenge.
I want to create a small dev database just to use for developing my application. I've downloaded the Oracle Instant client and followed the directions to "install" (ie, copy/paste and set up some environment variables), but I can't find any information on how to connect, login, create database, etc, or even exactly what Instant Client is, specifically. So, a few specific questions:
Is Instant client just a set of drivers and components that allow you to connect to an existing database, or can you use Instant Client to create and administer a completely new database?
If it CAN be used to create a new database:
How do you "start" (or similar concept) the database so that it is ready for connections.
Because there is no installation, and no default configuration, I haven't set up a default schema, port, etc. So, what is the default connection information to connect to the database for the first time?
For example, I use SQL Developer to connect to and administer my remote database, so how could I connect to Instant Client from SQL Developer?
The client is JUST a client.
You'll want to download the Oracle Database installs. The easiest would be the XE (Express Edition) - it's free, and gets going on windows or linux pretty quick.
You'll then install the server software and THEN create a database. Then you can use your client to connect to said database. You can use your client now to connect to any Oracle database running on any server that you can see on your network.
There are more alternatives.
I talk about this in more detail here.
I have to create win32 client on Delphi, which can work with database on Oracle. The only problem with this task that client have to demand "zero administration".
In other words user downloaded it from our site and ran it without any installing oracle client and tuning tnsnames.ora.
My first aproach was to install apache on server side with connection to Oracle. Our win32 client this case is like web brouser works with Oracle via https.
It works but performance is not so good as expected. Delay in reaction between clent and server side is too long.
Is there any way to acheve my goal (zero adminstration client with good enough performance)?
The product ODAC (Oracle Data Access Components) from DevArt has a "no oracle client needed" mode. This would probably be the easiest solution. You could also just include the Oracle Instant Client with your product and use Oracle's "EZConnect" syntax so that you don't have to configure anything on the client. Using EZConnect allows you to connect to an Oracle Database without using a TNSNames.ora file.
I'm developing Java apps on Tomcat 5.5 using JNDI to connect to shared dbcp connection pools with JDBC 3.0 drivers and DB2 8 on zOS and also DB2 9 on LUW. In my app, I use org.springframework.jndi.JndiObjectFactoryBean to get the dataSource and feed it into an org.springframework.jdbc.core.simple.SimpleJdbcTemplate to run the queries. This has been a fairly good solution so far, but our DBAs are requesting that we provide better granularity for auditing SQL performance. Currently, all portlets and apps use the same connection pool to connect to the database and the only way to distinguish between apps is to match the SQL run with the SQL in each app. We don't want to create seperate pools for each app. DB2 provides several methods on their DB2Connection from the driver that allow us to set audit information.
setDB2ClientApplicationInformation
setDB2ClientUser
setDB2ClientWorkstation
setDB2ClientAccountingInformation
My question is... what's the best way to set these values on a connection from a connection pool. Do I need to access the underlying connection in order to set these values? Should I clear them before returning the connection to the pool? Does anyone have code examples?