The PL/SQL Wrap Utility – Hide source code in Oracle

A company has a code(Package, Procedure, Function etc) with all the proprietary information and logic in it. If this information is leaked out in the market then the competitors can take advantage of it and this can affect the business. One of the way to deal with this is to hide the code from others.
This can be achieved using oracle’s WRAP utility. The advantage of WRAP utility is that this converts the source code into some language that is not understood but the code can still be compiled like any other source code.
Using Wrap is very simple. In the bin directory of Oracle Home, the wrap utility is installed. The file name could be WRAP.exe or WRAP80.exe depending on the oracle version installed.
Syntax

 C:orantBIN>wrap.exe iname=[inputfilename] oname=[outputfilename]

e.g.
 C:orantBIN>wrap.exe iname=wrap_test.sql oname=wrap_test.plb

An example of using WRAP

Create a sample procedure wrap_test using following code

CREATE OR REPLACE PROCEDURE wrap_test
IS
BEGIN
 dbms_output.put_line(‘Wrap test complete’);
END;
/
then call the wrap utility using following
wrap.exe iname=wrap_test.sql oname=wrap_test.plb

Content of new file wrap_test.plb
CREATE OR REPLACE PROCEDURE wrap_test wrapped
a000000
b2
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
7
4f 8d
LPjE3qKQyH/yQRCK4+efvSyST50wg5nnm7+fMr2ywFznKMB04yhSssvum3SLwMAy/tKGBvVS
m7JK/iiyveeysx0GMCyuJOqygaVR2+EC8XcG0wJd5GisbnfxwzIu9tHqJB/2OabWTW+0
/

It is very clear from this that the new code is not readable and so is completely hidden from others.
Drop your procedure(if already created) and recreate using the the new file wrap_test.plb which can be compiled as any other package. Important point here is that the source code will be hidden and cannot be read.
Another important point to remember is that once wrapped, a code cannot be unwrapped.

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