I've received the error "PDE-PLI011 A TOOLS COMMON SCHEMA TABLE IS MISSING FROM THE OBJECT STORE"
when I tried to open my form. I'm using forms 6i
Also I have a prior version of my form (two days old) and it is working perfectly...

What can I do for recover my two days work?

I look into oracle technet forms documentation and this is what thay said about it:

"PDE-PLI011 A tools common schema table is missing from the object store.

Cause: You attempted to create or access a library stored in the database, but the operation failed because a table was missing from the Oracle Tools Common Schema.

Action: Contact your DBA and insure that the Oracle Tools Common Schema is installed properly.

PDE-PLI017 The specified library, , does not exist in the database."

I dont believe this is the problem because how I said a prior version of my form is working very well.

Thanks in advance for your help