ORA-01536: Out of space error when doing CTAS

Question

I have two schemas A and B. I'm trying to copy over table B.users to A. I've followed these steps:

Run in schema B:

GRANT ALL ON users TO A;

Run in schema A:

CREATE TABLE users AS (SELECT * FROM B.users);

This gives the error:

SQL Error: ORA-01536: space quota exceeded for tablespace 'A' 01536. 00000 - "space quota exceeded for tablespace '%s'" *Cause: The space quota for the segment owner in the tablespace has been exhausted and the operation attempted the creation of a new segment extent in the tablespace. *Action: Either drop unnecessary objects in the tablespace to reclaim space or have a privileged user increase the quota on this tablespace for the segment owner.

The error seems to be misleading and I suspect something else is the problem here, because the users table has only some 1000 users or so and the tablespace in question has 2 GB allocated to it, all of it free. Furthermore trying to copy just a single row also gives the same error:

CREATE TABLE users AS (SELECT * FROM B.users where rownum < 2);

However, copying schema without any data succeeds:

CREATE TABLE users AS (SELECT * FROM B.users where rownum = -1); /* This works */

What am I missing here?

Answer 1

The user A must be running out of quota(or you might have forgotten to assign quota) on assigned tablespace.

The error seems to be misleading and I suspect something else is the problem here, because the users table has only some 1000 users or so and the tablespace in question has 2 GB allocated to it, all of it free.

Error is self-describing. It's stating that quota for the user(owner of the segment) has exceeded.

However, copying schema without any data succeeds:

CREATE TABLE users AS (SELECT * FROM B.users where rownum = -1); /* This works */

To execute this command user don't need quota because its simply creating an empty table whose definition will be stored in data dictionary.

Increase the quota for the user A as shown below.

SQL> conn sys as sysdba
SQL> alter user A quota <size> on <tablespace>;