Version Controlling in Oracle database - Ideas ?

Looking for a solution to version controlling of database objects in Oracle.

The scenario is like this:

Multiple people simultaneously work on the same database object in TOAD.

How can we implement a version controlling feature.

Putting this in simple words,

If X checks out a file from TOAD and Y needs to work on the same file
(assuming they have the same privilege),
Y should not be allowed to work on the object till X finishes working on it.

We want to put a restriction on the database objects such that simultaneously no two users should be able to work it.

Integrating VSS with TOAD was not acceptable since it would be file based(saving the .sqls).

Qs. Is there any feature available in Oracle(with oracle 8.1.7) or any third party tool that does this ?

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Author: VIVEK_SHARMA
  INET: VIVEK_SHARMA_at_infosys.com

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