Earlier I created a user :

SQL>create user suhail identified by password
SQL>User created.
SQL>Grant create session,create table to suhail;
SQL>Grant Succeeded.

but when I login as suhail and try to create a table I get an error saying ORA-01950: no privileges on tablespace 'SYSTEM' . What error is it ? Why does it occur ?

SQL> connect suhail
Enter password:
SQL> create table suhail_table(name char(10));
create table suhail_table(name char(10))
ERROR at line 1:
ORA-01950: no privileges on tablespace 'SYSTEM'

I am using Oracle Database 11g Express Edition Release


This error says that the user doesn't have quota on tablespace SYSTEM which is set as the default persistent tablespace. You can assign a user the quota like this:

sql> alter user scott quota 50m on system;

Here, 50m means that the user quota on the SYSTEM tablespace is 50 mebibytes. You can also set the quota to unlimited.

However it is a bad practice to store user and application data in SYSTEM tablespace as it causes data fragmentation and thus degrades performance. So I would recommend you to create a new permanent tablespace:

sql> create smallfile tablespace users datafile '/u01/app/oracle/oradata/ORCL/users.dbf' size 10g;

And then set it as the default database permanent tablespace so that objects created by the users go into that default tablespace:

sql> alter database default tablespace users;
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  • can you please explain the command alter database default tablespace users – Suhail Gupta Mar 11 '13 at 13:05
  • 1
    On Oracle XE 11, the users tablespace already exists, so you only need to alter database default tablespace users; and alter user scott quota 50m on system; – Andrew Spencer Nov 14 '13 at 7:55

You have to create one new tablespace into the database because for the SYSTEM tablespace access, SYSDBA privileges are required.

So, create one new tablespace and assign it as the default tablespace to all users. When you create any user, by default it will give assign particular tablespace.

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