Get List of All Tables in Oracle

Get list of all tables in Oracle?

SELECT owner, table_name
  FROM dba_tables

This is assuming that you have access to the DBA_TABLES data dictionary view. If you do not have those privileges but need them, you can request that the DBA explicitly grants you privileges on that table, or, that the DBA grants you the SELECT ANY DICTIONARY privilege or the SELECT_CATALOG_ROLE role (either of which would allow you to query any data dictionary table). Of course, you may want to exclude certain schemas like SYS and SYSTEM which have large numbers of Oracle tables that you probably don't care about.

Alternatively, if you do not have access to DBA_TABLES, you can see all the tables that your account has access to through the ALL_TABLES view:

SELECT owner, table_name
  FROM all_tables

Although, that may be a subset of the tables available in the database (ALL_TABLES shows you the information for all the tables that your user has been granted access to).

If you are only concerned with the tables that you own, not those that you have access to, you could use USER_TABLES:

SELECT table_name
  FROM user_tables

Since USER_TABLES only has information about the tables that you own, it does not have an OWNER column – the owner, by definition, is you.

Oracle also has a number of legacy data dictionary views-- TAB, DICT, TABS, and CAT for example-- that could be used. In general, I would not suggest using these legacy views unless you absolutely need to backport your scripts to Oracle 6. Oracle has not changed these views in a long time so they often have problems with newer types of objects. For example, the TAB and CAT views both show information about tables that are in the user's recycle bin while the [DBA|ALL|USER]_TABLES views all filter those out. CAT also shows information about materialized view logs with a TABLE_TYPE of "TABLE" which is unlikely to be what you really want. DICT combines tables and synonyms and doesn't tell you who owns the object.

List all tables of a given user in Oracle

This will get all the tables where the "JOHN" user is the owner:

SELECT * FROM USER_TABLES;

or

SELECT * FROM ALL_TABLES WHERE OWNER = 'JOHN';

([TL;DR] 'JOHN' typically needs to be in upper-case. Assuming that the user john was created using the CREATE USER john ... statement then Oracle's default behaviour is to convert all object names (i.e. tables, columns, users, etc) to upper case. When you query the data-dictionary the table details will be stored in this case (and not the case you used in the original command unless you wrap it in double quotes).)

Get a list of all tables in Oracle Database in Python

If you want only list of tables (without table owner):

cur.execute("SELECT table_name  FROM dba_tables")
for row in cur:
    print row

How do I list all tables in a schema in Oracle SQL?

To see all tables in another schema, you need to have one or more of the following system privileges:

SELECT ANY DICTIONARY
(SELECT | INSERT | UPDATE | DELETE) ANY TABLE

or the big-hammer, the DBA role.

With any of those, you can select:

SELECT DISTINCT OWNER, OBJECT_NAME 
  FROM DBA_OBJECTS
 WHERE OBJECT_TYPE = 'TABLE'
   AND OWNER = '[some other schema]'

Without those system privileges, you can only see tables you have been granted some level of access to, whether directly or through a role.

SELECT DISTINCT OWNER, OBJECT_NAME 
  FROM ALL_OBJECTS
 WHERE OBJECT_TYPE = 'TABLE'
   AND OWNER = '[some other schema]'

Lastly, you can always query the data dictionary for your own tables, as your rights to your tables cannot be revoked (as of 10g):

SELECT DISTINCT OBJECT_NAME 
  FROM USER_OBJECTS
 WHERE OBJECT_TYPE = 'TABLE'

How to view all tables that are created by me in oracle 11g?

Thanks to @Littlefoot I learned that I was using "System" (default) schema, instead of creating my own. So in that system schema there are tons of default tables that are available. So by querying the "users_tables", I was also getting all the System default tables, along with my created tables.

Getting all tables from an oracle database

ALL_TABLES will show you all the tables that you have access to SELECT from. DBA_TABLES will show you all the tables that exist in the database though you'll need an additional privilege grant to be able to query the DBA* data dictionary objects.

Listing All Tables and Columns from my Database (ORACLE)

Use listagg to get all the column names in a table as a list.

create table table_column_list as 
SELECT table_name,listagg(column_name,',') within group(order by column_id) column_list
FROM user_tab_cols
group by table_name;

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