Trick to generate trigger codes for some of the tables

We have a requirement in generating triggers for a set of configured tables in our database ( Oracle 10g) . I am thinking to write a procedure which reads the table names configured and create trigger for each table with a defined business ( Its just for audit , so the trigger code is same for table A and B but the name and columns might differ , the basic logic is same.)

The problem I am facing is that , in my generic procedure I am not able to generate the trigger string and execute it using 'EXECUTE IMMEDIATE' as for some of our tables when all columns and trigger code is appended the string goes beyond 4000( defined as VARCHAR2) .

The same will happen even if I use COLLECTIONS,TYPES or any object ?

Is there any other tricks to accomplish this, other than

1. Writing/ Spooling the results to a file and executing this file to create a trigger ( I don't want to create the trigger source codes and maintain the file) 2.Writing individual trigger codes.

Any tweaks and tricks is appreciated.

The basic template would be

CREATE TRIGGER BEFORE EACH ROW
BEGIN

        IF INSERTING
                INSERT TO SOME TABLE
        IF UPDATING
                INSERT TO SOME TABLE
        IF DELETING
                INSERT TO SOME TABLE

Thank You,

Kind Regards,
Sreejith Nair

DISCLAIMER: "The information in this e-mail and any attachment is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received this e-mail in error, kindly contact the sender and destroy all copies of the original communication. IBS makes no warranty, express or implied, nor guarantees the accuracy, adequacy or completeness of the information contained in this email or any attachment and is not liable for any errors, defects, omissions, viruses or for resultant loss or damage, if any, direct or indirect."

--
http://www.freelists.org/webpage/oracle-l