I have a machine running Oracle 10g server in windows server 2008. I want to take backup of the database. I also want to take backup of some files saved on hard disk by oracle server that users have uploaded using my website.
I can connect to the Oracle server using sql developer and sqlplus. I can run sql queries on the server.
In order to take backup of database I have to run the command "exp" (this is the only way of taking backup of databases that I know). There might be some other way but there is another problem because of which I must run dos command. That problem is to take backup of files. These files are stored in c:\mydir. The folder mydir is not accessible anyway through web and is not a shared folder.
I have tried running "host " in sqlplus after connecting to oracle server, that is at "sql>" prompt. The command ran successfuly but at local machine, not at oracle server.
Edit: The "host" command is provided by sqlplus and is not an oracle command, means cannot be used in a query. Sqlplus even when connected to remote machine run the "host" command at local machine.
The target is to either make sqlplus run the "host" command at remote machine, Or run the dos command from inside a pl/sql query (independent of sqlplus).
In addition to what Justin has written:
If you want to take a logical snapshot of the database the new DataPump tool is preferred over the old (and deprecated) exp tool.
DataPump is a commandline tool (expdp) but also has a SQL API through Oracle packages and procedures.
The Data Pump API (including examples)
DBMS_DATAPUMP (reference)
But if you want a "real" backup you should look into RMAN
It is possible to create a Java stored procedure on the database server that executes an operating system command on the Oracle server. But it would be extremely unusual to use the export utility to backup a database-- that only creates a logical backup not a more appropriate physical backup. And it would be extremely unusual to run a backup by connecting to the database via SQL*Plus and spawning a job on the server operating system. It would make much more sense to create a job using the Windows scheduler on the database server that ran whatever export commands you want to run.
Related
In my PL/SQL script, I have requirement to test the connectivity of remote data. Normally, in OS shell, we use command tnsping. Is there any command in SQL or PL/SQL so that I can test connectivity.
Basically, I am getting some data using database link. I want my script to execute immediately. If remote database is available then I want to run query using database link. If remote database is unavailable then I want to skip the getting of data using database link. So, this is the reason why I am looking for.
Kindly guide me for proper way. So, that my script does not hang in case of unavailability of remote database.
I am using Oracle 12.1C.
Is it possible to run commands on another Unix server from an Oracle apex application ?
Oracle apex and Unix are on different machines .
Apex is just a layer on top of the database.
From within the oracle database you can execute OS commands, so you could execute a script that connects from your database server over ssh.
or you could wrap your unix command in a cgi script and have it run of http. In pl/sql you could then invoke it via apex_web_service.make_rest_request
Make sure you check security
No you cannot. If your requirement is just to transfer the files, you can use ftp or sftp commands. But to perform unix operations, you cannot run in different machines
I am new to Oracle databases. I have installed DBeaver (never used this before too) to connect to the database.
I have created a connection (which I believe is called database) and now I am able to see the database tables and everything. How do I take the backup of the Oracle Database in DBeaver so I can use it locally for test purposes before making any change on live database?
I can't find any option to take the backup of connection/database.
To do a proper backup of your Oracle Database, you should use the oracle provided utility, Recovery Manager. It's a command line interface that's called from your DB server shell prompt via 'RMAN'
You can also use Data Pump to export all or part of a database that can be used to import to another database...not really used for recovery of an existing database.
I'm not aware of your tool having interfaces for either of these Oracle features.
You might not need a backup at all for your needs, take a look at Oracle Flashback Technology.
DBeaver does not support oracle database export import. See details here:
https://dbeaver.com/docs/wiki/Backup-Restore/
You need to run the sqlplus tool to create a folder where oracle is going to import/export database dumps. Login should happen as sys as sysdba and enter the password you previously entered during database server installation. Example:
sqlplus sys/[your password] as sysdba
After you successfully logged into sqlplus run the following command (don't forget to set to a different folder that you prefer to use):
create or replace directory DATA_PUMP_DIR as 'D:\Database Backups';
Once this is done exit from sqlplus and enter the following command into the command line (again no sqlplus should be used here)
expdp sys/[your password]#localhost:1521/[listener name] file=your-database-dump-file.dmp owner=[your schema]
Once this is done and finished you can zip your database dump if you would like to upload it somewhere else. (I had 9 GB dump and the zipped size was 1.6 GB)
Hi I've been reading this instruction:
http://www.oracle-base.com/articles/10g/oracle-data-pump-10g.php#NetworkExportsImports
From my understanding, I need to login my local oracle database, establish a database link to the remote oracle server, then use expdp to export database to local.
But now I only have sqlplus installed in local computer, how can I expdp to local?
Thank you very much.
You can't. expdp only works locally. The database link is just a kludge to make the Oracle instance on your current machine be able to see the data in the other database. If you truly need a remote back up, your only non-custom or third party option would be exp, but that's deprecated. (I'm not aware of any third party solutions, either.)
Another option to consider is running the command on the remote server and then using something else to copy the file. This is more feasible if you run a Linux server, since you can likely use SSH and SFTP.
You could try Oracle Express on your local machine if you want to pursue the database link option. That is a very heavy solution, of course.
(In all honesty, I have had endless troubles with expdp anyway. Well, more with impdp, but still. The data dump/restore situation in Oracle is not very good, in my opinion.)
I need to automate a selective table / user object backup I currently am doing via PL / SQL Developer.
The way I currently do it is via Tools/Export Tables and Tools/Export User Objects, manually select tables / objects, then set the options, choose destination and export. I do this from a windows laptop and the database is located in a suse linux server, both are in the same LAN. DB is running 24/7 and can not be shutdown. Also currently my oracle programming skills are very basic as I only do maintenance to this solution. I would like to keep doing the backup process in the windows laptop, but I would consider a server side script solution also and then retrieving the .sql files from server.
Thanks in advance
I wouldn't really call it a backup, but look at exp/imp and expdp/impdp (data pump) in the Utilities manual
As Gary implies exp/imp really isn't a backup solution. If this database is important to you or others, figure out how to use RMAN , which is usually configured to run in a mode that doesn't require the database to be shut down. Although it executes on the database host and for non-tape destinations must write its files to a filesystem attached to the host, it can be launched remotely.
RMAN is aimed at restoring/recovering the entire database, so if what you're looking for is only the ability to recover isolated objects it may not be for you.