通过代码从.net备份Oracle数据库

Question

I want to take backup or restore of my oracle database through .Net code. I searched a lot but not found any correct solution. Like we do backup in SQL server by executing query.

backup database :DatabaseName to disk = ':DestinationPath

same I want to do in Oracle.

Answer 1

You can use an Oracle utility like exp/imp or the newer Oracle Data Pump to create database exports (backups), though you have to execute these outside of the database, in a command line/terminal window. See this for more information: http://www.oracle-base.com/articles/10g/oracle-data-pump-10g.php

Update : I stand corrected. A Data Pump job can be started through PL/SQL. Thanks @a-horse-with-no-NAME.

This article shows how to start a Data Pump job from sql: http://docs.oracle.com/cd/B19306_01/server.102/b14215/dp_api.htm#i1006925

Answer 2

Careful: a DataPump or Exp Export is not a real Oracle Backup, and you should test to make sure you can restore from the Dump files you're creating. The closest thing Oracle has to SQL Server's BACKUP DATABASE command is RMAN, and even then it's quite different. But it is very useful to call from a Batch File. I'm both a DBA for SQL Server and Oracle, and the way each Engine performs Backups is one of the biggest differences. Exp and Imp are more similar to SQL's bcp commands (but more powerful). Exp won't backup your Controlfile or AchiveLogs, and you may need these in case of a disaster. With Exp, make sure you use CONSISTENT=Y option (FLASHBACK_TIME for newer DataPump Export). SQL Server backups are much more straight forward, and easier to recover.

Answer 3

I found an easy way to take backup of oracle database though code. I take credentials from user through code and make dynamically batch file of exp/imp commands. and run this batch command with process class.

Thank you all for your responses.

Answer 4

OledbCommand cmd=new OledbCommand ("backup database databasename to disk ='C:\databasename.bak'",con);

con.open();

cmd.ExecutenonQuery();

con.close();