Using Export and Import to Move a Database

Between

Platforms

10g官檔:

The Export and Import utilities are the only method that Oracle supports for moving an existing Oracle database from one hardware platform. to another. This includes moving between UNIX and NT systems and also moving between two NT systems running on different platforms.

The following steps present a general overview of how to move a database between platforms.

As a DBA user, issue the following SQL query to get the exact name of all tablespaces. You will need this information later in the process.

SQL>?SELECT?tablespace_name?FROM?dba_tablespaces;

As a DBA user, perform. a full export from the source database, for example:

>?exp?system/manager?FULL=y?FILE=expdat.dmp

See Also:

Move the dump file to the target database server. If you use FTP, be sure to copy it in binary format (by entering

binary at the FTP prompt) to avoid file corruption.

Create a database on the target server.

See Also:

for information about how to create a database

Before importing the dump file, you must first create your tablespaces, using the information obtained in Step 1. Otherwise, the import will create the corresponding datafiles in the same file structure as at the source database, which may not be compatible with the file structure on the target system.

As a DBA user, perform. a full import with the

IGNORE parameter enabled:

>?imp?system/manager?FULL=y?IGNORE=y?FILE=expdat.dmp

Using

IGNORE=y instructs Oracle to ignore any creation errors during the import and permit the import to complete.

Perform. a full backup of your new database.

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