-
1. The free oracle **** can provide services normally, and there is no difference between them and genuine ones. Because Oracle sells services. After-sales service is provided only with genuine authorization.
2. For those with low access, MySQL is more suitable, lightweight, and the function is comparable to that of large databases.
3. At present, large state-owned enterprises use more oracle, electricity, telecommunications, etc., mainly in its stability and strong management.
4. There is no difference between the software itself, but the service authorization.
-
Developers: All software** is free, and most come with a developer license that allows you to use all versions of these products for free while developing and prototyping applications (or just for self-learning purposes). (Unless otherwise noted, our technical support organization will not provide technical support, **support, or updates for the software programs licensed under this Agreement.)
Customer: If you already have a commercial license, you should deliver cloud software from Oracle Software specifically for the customer's own purchase. For patches, see My Oracle Support.
Sun products are now only available through Oracle Technology Network, Oracle Software Delivery Cloud, and My Oracle Support
The above is the official explanation.
-
Oracle databases are not available for commercial use.
Oracle databases are billed in two ways for commercial use. Oracle licenses can be purchased based on the number of users and the number of CPUs (i.e., wireless user edition).
Special case: The current user license of Oracle 11G is about RMB 3,005 for an unlimited period.
According to the number of users: the purchase amount of 50 user licenses for an indefinite period is 10,000.
According to the number of CPUs: the indefinite use period of each CPU license is 179,000 (multi-core needs to be converted by the coefficient) According to the coefficient of IBM small computers, the purchase ** is 179,000, which is similar to the ** of 50 user licenses.
About services**: Generally, the purchase of an Oracle license includes the service fee for the first year, and the subsequent fee is calculated at 22% of the original price per year.
-
Oracle has two authorization methods, by the number of CPUs (process) and by the number of users (NamedUser Plus). The former method is generally used when the number of users is uncertain or the number of users is large, such as in the Internet environment, while the latter type is usually used when the number of users is determined or small. For more information, you need to ask about the OPN units of Oracle.
In fact, there are also free software ** to use on the Internet, the only difference is that there is no way to use the original after-sales service without purchasing a license, but many third-party oracle operation and maintenance units can also do it, such as making the famous third-party Chongqing Sizhuang Company and so on are also OPN, you can ask for details.
CPU: Number of licenses = Number of CPUs × Coefficient The coefficient comes from a table of parameters from Oracle, such as 1 for IBM Power6 processors and AMD and Intel processors.
Per user: Oracle database is licensed based on the number of users, which refers to the number of users connected to the Oracle database on the end end. When purchased according to the number of users, it can only be used for one system, and it is not allowed to be installed on multiple machines.
Every user who accesses an oracle database, whether a natural person or a device, is counted as a named user. In the case of a BS architecture, it refers to the number of users connected to the middleware.
First, the functions are different.
1. to char: Output the time and date according to the specified format, and get a string instead of the date type. >>>More
It can be used normally after plugging in the USB flash drive, but there is no icon in the taskbar to safely delete the hardwareI don't know how to fix it, here is a share of the fix. >>>More
1) Oracle won't check.,Over the years, I've seen a particularly large number of visits (about 10 years ago,About 10G data a day,But some people's data volume is about the same as him) has been checked (in fact, it can't be used.,You can't use it even if you connect to the Internet.,There's no problem with internal use),Others haven't seen it checked.。 Tens of trillions, oracle estimates too lazy to care. (The value of the case is too low). >>>More
1.The highest level of the database is nothing more than DBA, for enterprises, a good DBA is very popular, but for students who have not yet graduated, the prospects may not be optimistic, because there are too many units or enterprises that look at work experience, but even if the database is learned, it will be used in future programming, because the general system is directly linked to the database. >>>More
In the database view of MyEclipse, click Right->New to pop up the Database Driver window, select Oracle (Thin Driver) for Driver Template, and enter Oracle for Driver Name >>>More