Oracle Data Dictionary

Describes all objects in the database

SELECT *
FROM dba_objects

To see all the data dictionary views to which you have access

SELECT * FROM dict

Text source of the stored objects

USER_SOURCE describes the text source of the stored objects owned by the current user. This view does not display the OWNER column.

SELECT * FROM user_source WHERE TYPE='TRIGGER' AND LOWER(text) LIKE '%order%'

ALL_SOURCE describes the text source of the stored objects accessible to the current user.

SELECT * FROM all_source WHERE owner=:owner

DBA_SOURCE describes the text source of all stored objects in the database.

SELECT * FROM dba_source

Get list of all tables in Oracle

SELECT owner, table_name
FROM all_tables

ALL_TAB_COLUMNS describes the columns of the tables, views, and clusters accessible to the current user. COLS is a synonym for USER_TAB_COLUMNS.

SELECT *
FROM all_tab_columns
WHERE table_name = :tname

Conclusion

In this page (written and validated by A. Gawali) you learned about Oracle Data Dictionary . What's Next? If you are interested in completing Oracle tutorial, your next topic will be learning about: Oracle Privilege information.

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