Question

I want to search for column/field called ACC

I have 28 users. I got that information by this command; to list all schemas:

SELECT username FROM all_users ORDER BY username;

I am connected to user # 13 in the list called ‘ABCD’, by this command: SHOW USER;

Here is a detailed structure.

user1 > Has many tables > each table has many column/field.
user2 > Has many tables > each table has many column/field.
user3 > Has many tables > each table has many column/field.

and so on.

I need to search for field or column which is called ACC

Answer 1

You need to use ALL_TAB_COLUMNS or DBA_TAB_COLUMNS, depending on your access rights.

The following will get you every table, which has the column acc in it and the user who “owns” that table.

select owner, table_name
  from dba_tab_columns
 where column_name = 'ACC'

ALL_TAB_COLUMNS will display all the tables (and their columns) that are accessible to the user you are logged in as. DBA_TAB_COLUMNS displays them for everything in the database.