Update view ( view is based on 3 tables)

i have view based on 3 tables.
create view view_master
select '1' as no , name , no from a
union all
select '2' as no , name , no from b
union
select '3' as no , name , no from c
actually i wanted to update view base table, Can i update a view view_master ?
My question here is does oracle support view update ( view is based on 3 tables)
Please advise ,,,

Apart from Instead of trigger any other work around? The best way to answer that question is if you let us know:
- your database version ( select * from v$version; )
- give us a narrowed down example of the 'begin-situation' and the desired 'final situation'.\
See:
{message:id=9360002} for more details.
MY ORACLE DBA hates tiggers .He's not the only one ;)

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Thank you

First of all i would like to thank you for replying to my thread.
Secondly, i would like to inform you that the example that i have provided is just for REPRODUCTION purposes.
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Hi and thanks in advance !
i am facing a critical situation.
i have two schema & both are same!
the problem which i am facing is during updating a view of one i am facing above error while the same DML is issuing againt that view in other schema and that works fine.
what's the reason..
The major difference between two schema's is i hav different live and test database i migrate my access database to Oracle test database # 1.here i created a new user name deals . ok
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Message was edited by:
Fiz Dosani

but i have sample scenario in other schema which replica of this schema so why i haven't got this error there
one more interesting thing when i query select * from user_updateable_columns where table name ='ABC' in Schema # 1 it return i can modify some columns.
but when issue the data dictionary view in schema # 2, where i was facing ORA-1779 , select * from user_updateable_columns where table name ='ABC' in Schema # 2 it return i can not modify any columns.
Tables name are same in both schema.
Data same in both schema.
Constraint Same in both schema.
Indexes same in both schema.
why facing error in one schema not in other.
one more interesting thing, i had faced questionable object error when importing DMP into schema # 2.

Update view ( view is based on 3 tables)

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