difference btw utl_file and dbms_lob

Hello

What is the difference with utl_file, dbms_lob, doing the same file acess or difference?

797525 wrote:

What is the difference with utl_file, dbms_lob, doing the same file acess or difference?

UTL_FILE is a PL/SQL package that provides a PL/SQL code with the operating system standard interface IO. You will find this same interface in languages like C, C++, Pascal, PHP, Perl, and others.

DBMS_LOB is a PL/SQL package that allows you to manage an Oracle LOB data type. This data type is 'special' that it can contain objects of large data (such as video, sounds, images, documents, spreadsheets, etc.).

Technically speaking, there is very little that is the same between the two.

Conceptually, the two are however, interfaces 'files '. The only difference is that the files of UTL_FILE , external access (on the file system of the operating system). Whereas the DBMS_LOB provides the ability to create and store and manage "files" directly in the database. (there are also a BFILE data type that resembles a LOB, but is actually an external file)

It's rarely a good idea to get out of the database in a file system of an operating system with UTL_FILE. There are problems of security and access control. Concurrency issues and transactions. Problems with the integrity of the data. Problems with the backup of the data. Etc.

So, in general, when you're dealing with the concept of "+ files +" in Oracle, you should look at first using the Oracle database itself - and deal with files like LOBs using DBMS_LOB.

Tags: Database

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