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The first thing to say is that you should use Oracle. Because there is a big difference between Oracle and SQL Server in terms of interface and SQL statements. Of course, you can write standard SQL statements, and standard SQL statements can be traveled far in both databases, but if you use Oracle, you also need to learn PL SQL statements, which can only run on Oracle, then your company uses Oracle, you should use Oracle, which is a long-term plan.
The installation is also very simple, it is all a window, search on the Internet, there are installation instructions.
As for whether you need money for installation, then let me ask you if you ask for money when installing your computer's operating system? Anyway, mine is no! Oh, Oracle provides free** and learning, you can use it yourself.
But if you want to use commercial development, you have to buy a license, and how much does this license cost, I can only say, it's very expensive, really expensive.
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En yes ! sqlserver and oracle are two different things, you can connect to the company's oracle, database, you can also install it on your own machine, the next emulet, there are many, there are various versions of oracle database.
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It is recommended that you do it in one step and install an oracle server directly on the machine. The best version is the same as the company version.
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1. If it is a Windows operating system, first right-click the blank position of the computer taskbar, 2. Next, you need to click to open the task manager in the new small menu bar window, 3. Next, you need to switch to the process management interface in the new task manager window, 4. Next, if there is one, prove that the computer has installed the oracle database, and the database is running.
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If you want to connect to the Oracle database on another computer, you need to install the Oracle client on the computer and then connect through PL SQL. So what are the steps to install the Oracle client? Next, I will introduce to you the method of holding the Oracle client in the computer.
The details are as follows:1. First of all, the red box is the installation file of the oracle client, which is 32-bit, and the author is a 64-bit notebook, in fact, it doesn't matter.
2. Find "setup" in the installation file and double-click to run.
3. Once opened, click Next.
4. In the selection of "Installation Type Page", we select "Administrator".
5. Click "Install".
6. Wait for the progress bar to complete.
7. Exit after the installation is completed.
8. Yuansong OK, the oracle client has been installed.
That's it for you to install the Oracle client on your computer. The method is very simple, and friends who are interested in it can do it and take a look!
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Tools Material: Take win7 system as an example.
1. First select "Computer" and right-click the "Properties" icon.
2. Then in the interface, click the "Change Settings" button on the right side.
3. After transporting potatoes in the pop-up window, click the "Environment Variables" button in the "Advanced" dispersion cavity page card.
4. Then in the pop-up window, click the "New" button.
5. After that, in the pop-up window of the side-digger, enter the variable name "oracle home" and the variable value "e: oracle product", and click the "OK" button.
6. Click the "New" button, in the pop-up window, enter the variable name "tns admin", the variable value "e: oracle product", and click the "OK" button.
7. Next, click the "New" button, in the pop-up window, enter the variable name "nls lang", the variable value "simplified Chinese", and click the "OK" button.
8. Finally, in the pop-up window, click the "OK" button.
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Register a domain name and log in with that domain name.
I've used each step of the parsing and it's pretty good.
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Add a virtual NIC to the virtual machine configuration file.
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To get the IP address of the other party and the other party turns off the firewall, it should be fine.
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The network is not bridged.
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