Oracle Error:

ORA-01950: no privileges on tablespace ‘USERS’

Scenario:

I am trying to insert values in EMP table of C##SCOTT schema, but getting filled with above mentioned oracle error, Error itself self explanatory. I have forgotten to assign quota space for C##SCOTT on USERS tablespace. After assigning quota space on USERS, everything was smooth.

Error logs and solution:

On C##SCOTT schema:

SQL> show user;
USER is "C##SCOTT"
SQL> insert into EMP values(1,'scott',1234567898);
insert into EMP values(1,'scott',1234567898)
 *
ERROR at line 1:
ORA-01950: no privileges on tablespace 'USERS'

Connect as sysdba and assign quota to C##SCOTT on USERS tablespace:

[oracle@OL712c ~]$ sqlplus / as sysdba
SQL> show user;
USER is "SYS"
SQL> alter user c##scott quota unlimited on users;
User altered.

On C##SCOTT schema again:

SQL> show user;
USER is "C##SCOTT"
SQL> insert into EMP values(1,'scott',1234567898);
1 row created.

In my case, it was problem with quota allocation for C##SCOTT schema on USERS tablspace.