Oracle bbed Block Browser /Editor

Oracle bbed is a utility which allows browsing and editing of disk data structures maintained by the Oracle RDBMS kernel. 

The targeted user of the block browser/editor is a person who is knowledgeable of these disk data structures and has an understanding of the dependencies between them.

BROWSE read directly from disk, regardless of whether the instance is up or down.

EDIT Unrecoverable -> write all edits to disk immediately (write-through).

Ability to view and modify blocks in hexadecimal for all file and block types supported by Oracle. When modifying data in this mode, no range or dependency checking will be done.

The block editor is an externally invoked facility (similar to SQL*DBA or DBVERIFY) that supports a set of optional command-line parameters at invocation.

bbed [parameters]

where parameters can consist of the following (default settings underlined):

parameters:==

DATAFILE = filename

BLOCKSIZE = blocksize [2048]

MODE = BROWSE/EDIT

REVERT = y[es]/n[o]

SPOOL = y[es]/n[o]

LISTFILE = contains filenames, w/optional sizes

CMDFILE = bbed command filename

LOGFILE = log filename [log.bbd]

BIFILE = before-image filename [bifile.bbd]

PARFILE = parameter filename