BBED Block Browser EDitor for Oracle 11g

BBED (Block Browser Editor) is a tool for Oracle internal use, and it helps you to read and manipulate data at the Oracle Database block level. No need to say that it’s very powerful and also extremely dangerous because you can corrupt data/header blocks. There’s an unofficial but very comprehensive manual for BBED. It’s written by Graham Thornton. You can download it as PDF:

Before Oracle 11g, BBED object code is shipped but you need to compile it to be able to run it. On 11g, the required files to compile BBED is not shipped. So you need to copy the following files from an Oracle 10g home to Oracle 11g home: