How to backup oracle database table-Oracle-php.cn

To back up Oracle database tables, use the EXPORT command to export the table: EXPORT table_name TO filename.dmp. Use RMAN to create a backup set: BACKUP TABLESPACE tablespace_name

How to backup oracle database table

How to back up Oracle database tables

Export tables:

Use theEXPORTcommand from the database Export table. The syntax is as follows:
```
EXPORT table_name TO filename.dmp
```
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For example:
```
EXPORT customers TO customers.dmp
```
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Specify the data type to be exported, such as table data (ROWS) and table definition (TABLE):
```
EXPORT table_name TO filename.dmp ROWS=Y TABLE=Y
```
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Import table:

Use theIMPORTcommand Import the table into the database. The syntax is as follows:
```
IMPORT table_name FROM filename.dmp
```
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For example:
```
IMPORT customers FROM customers.dmp
```
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Specify import options, such as ignore errors (IGNORE=Y) and update existing data (TABLEEXISTS=REPLACE):
```
IMPORT table_name FROM filename.dmp IGNORE=Y TABLEEXISTS=REPLACE
```
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Using RMAN:

Using Oracle Recovery Manager (RMAN ) to create a backup set. The syntax is as follows:
```
BACKUP TABLESPACE tablespace_name
```
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For example:
```
BACKUP TABLESPACE customers
```
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Restore the table space backup to the target database. The syntax is as follows:
```
RESTORE TABLESPACE tablespace_name FROM backupset
```
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For example:
```
RESTORE TABLESPACE customers FROM backupset
```
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Tips:

Execute ## on the database before backing up #ALTER DATABASE BACKUP CONTROLFILE TO TRACEto generate a backup control file.
Before restoring a table, make sure that the target database is compatible with the database version when the backup was created.

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