Oracle12快速导入导出数据（oracle12导入导出）

Oracle12 Fast Data Import and Export

Oracle12 is one of the most popular database management systems in the world, serving a range of business and personal needs. One of the key features that makes Oracle12 so useful is its ability to import and export data quickly and efficiently. In this article, we’ll take a closer look at how to use Oracle12 for fast data import and export.

To get started, let’s first take a look at how to import data into Oracle12. There are a few different methods that you can use, but one of the most popular is to use the Oracle Data Pump utility. This tool allows you to move large amounts of data quickly and easily, and it can be used for both imports and exports.

To use the Data Pump utility for data import, you’ll need to follow a few simple steps. First, you’ll need to create a new database link. This link will allow you to connect to the source database where the data is stored. Once the link is created, you can use SQL statements to specify the data that you want to import.

Here’s an example SQL statement that you could use to import data from a table called “employees” in a remote database:

IMPDP system/password NETWORK_LINK=remote_link SCHEMAS=hr REMAP_SCHEMA=hr:my_hr REMAP_TABLESPACE=hr_data:my_hr_data TABLES=employees

This statement tells Oracle to use the Data Pump utility to import data from the “employees” table in the remote database, using the system username and password for authentication. We also specify the database link that we created earlier, along with some other options like remapping the schema and tablespace names.

Once you’ve executed this SQL statement, Oracle will begin importing the data from the remote database. Depending on the size of the dataset, this process could take a few minutes or several hours. However, because we’re using the Data Pump utility, we can be confident that the import will be efficient and reliable.

Now let’s take a look at how to export data from Oracle12. Agn, there are several methods that you could use, but we’ll focus on the Data Pump utility agn. Exporting data using Data Pump is actually even easier than importing it – all you need to do is specify the tables or schemas that you want to export.

Here’s an example SQL statement that you could use to export data from a table called “orders” in the local database:

EXPDP system/password SCHEMAS=warehouse TABLES=orders DIRECTORY=my_dir DUMPFILE=orders_export.dmp

This statement tells Oracle to use the Data Pump utility to export the “orders” table from the “warehouse” schema to a file called “orders_export.dmp” in the “my_dir” directory. The dump file that’s created will contn all of the data and metadata for the specified tables, and it can be easily imported into another Oracle database using the same tools and processes as before.

In conclusion, Oracle12’s fast data import and export capabilities make it an ideal choice for anyone who needs to move large amounts of data quickly and efficiently. Whether you’re importing data from a remote database or exporting data for backup purposes, Oracle12 has the tools you need to get the job done. So if you’re looking for a powerful and flexible database management system, be sure to give Oracle12 a try!