Author: Jimmy Wolfee

Hi all,

I was just wondering about the fact that how to create an auto increment column in oracle. It is quite easy to create an auto increment column in sql server but in oracle’s old version that is 11, it is bit of an overwork for you. Well it is not that difficult if you are using SQL developer but in case you are creating the table from CLI on Unix or other CLI based operating system than you need to know that to create an auto increment column in oracle you need to first declare a sequence using the below structured query:

create sequence name_of_sequence

Once you have executed the above query you will have to create a trigger of type before on the newly created table where you want the auto incremented column. The structured query for the same is mentioned below:

create or replace trigger name_of_trigger before insert on new_tbl_name
for each row
begin
select name_of_seq.nextval into :new.auto_incremented_col_name from dual
end

Congrats you have just created the column with auto incremented values

Well this is not a difficult answer at all but i was facing some weird issues with Oracle .Net provider when i had tried to login with the newly created user. Before you try to login with a newly created user in Oracle .NET provider, please first give that user some basic set pf permissions.

 I don’t know which is the key permission below, which had successfully helped me in login into the .NET provider interface but here are the permission

 

GRANT create session TO demo_user;

GRANT create table TO demo_user;

GRANT create view TO demo_user;

GRANT create any trigger TO demo_user;

GRANT create any procedure TO demo_user;

GRANT create sequence TO demo_user;

GRANT create synonym TO demo_user;