How to solve ORA-01031 - Error When Creating New User PL/SQL - oracle

I am trying to create new user in PL/SQL. I am getting an error as follows:

User you use to create another user doesn't have required privileges.
In Oracle, such a "privileged" user is SYS. For example:
SQL> connect sys as sysdba
Enter password:
Connected.
SQL> select tablespace_name from dba_tablespaces;
TABLESPACE_NAME
------------------------------
SYSTEM
SYSAUX
UNDOTBS1
TEMP
USERS
SQL> create user brisime identified by blabla
2 default tablespace users
3 temporary tablespace temp
4 quota unlimited on users;
User created.
SQL>
If I try to do the same as a non-privileged user (i.e. the one that doesn't have create user privilege), it'll fail:
SQL> drop user brisime;
User dropped.
SQL> connect scott/tiger
Connected.
SQL> create user brisime identified by blabla
2 default tablespace users
3 temporary tablespace temp
4 quota unlimited on users;
create user brisime identified by blabla
*
ERROR at line 1:
ORA-01031: insufficient privileges
SQL>
But, if SYS grants create user to scott, Scott will also be able to do that:
SQL> connect sys as sysdba
Enter password:
Connected.
SQL> grant create user to scott;
Grant succeeded.
SQL> connect scott/tiger
Connected.
SQL> create user brisime identified by blabla
2 default tablespace users
3 temporary tablespace temp
4 quota unlimited on users;
User created.
SQL>
Therefore, make sure to acquire required privileges before trying to create user.
The same goes for altering the user - you need to have those privileges.

Related

How can i restrict a user from creating tables in their own schema?

My user only has the privilege to create session, manage scheduler. But I can create tables in the schema, can I change that?
Thank you.
The if the user is able to create a table, then he has more privs than you claim. Here I create a user, grant him ONLY the privs you say, then connect as that user and try to create a table:
SQL> show user
USER is "SYSTEM"
SQL> create user beetle identified by bailey;
User created.
SQL> grant create session to beetle;
Grant succeeded.
SQL> grant manage scheduler to beetle;
Grant succeeded.
SQL> select privilege
2 from dba_sys_privs
3 where grantee='BEETLE';
PRIVILEGE
----------------------------------------
MANAGE SCHEDULER
CREATE SESSION
2 rows selected.
SQL> select granted_role
2 from dba_role_privs
3 where grantee='BEETLE';
no rows selected
SQL> select owner ||'.'||table_name,
2 privilege
3 from dba_tab_privs
4 where grantee='BEETLE';
no rows selected
SQL> -- -------- create the tables
SQL> conn beetle/bailey#pdb01
Connected.
SQL> create table my_test(dob date);
create table my_test(dob date)
*
ERROR at line 1:
ORA-01031: insufficient privileges
SQL> -- -------- load tables
SQL> -- -------- Do the query
SQL> -- -------- clean up
SQL> conn system/halftrack#pdb01
Connected.
SQL> drop user beetle cascade;
User dropped.

Query about privileges in oracle

How to invoke privileges to create a view in oracle 10g enterprise edition from the user scott? I am getting insufficient privilege error message while trying to create a view for an existing table
To give privileges to create a view, You need to grant CREATE VIEW to Scott user from sysdba user as follows:
GRANT CREATE ANY VIEW TO Scott;
-- OR --
GRANT CREATE VIEW TO Scott;
TL/DR: you need CREATE VIEW system privilege and SELECT object privilege on the related table.
Actually any user having been granted CREATE VIEW with admin option can grant CREATE VIEW this include SYSDBA and SYSTEM users but also any user having DBA role. To able to create a view on a table you generally also need SELECT privilege on the table.
Example with CREATE VIEW WITH ADMIN OPTION:
SQL> --
SQL> show user;
USER is "SYS"
SQL> --
SQL> create user scott identified by "tiger";
User created.
SQL> grant create session to scott;
Grant succeeded.
SQL> --
SQL> create user myadmin identified by "myadmin" quota unlimited on users;
User created.
SQL> grant create session to myadmin;
Grant succeeded.
SQL> grant create table to myadmin;
Grant succeeded.
SQL> grant create view to myadmin with admin option;
Grant succeeded.
SQL> --
SQL> connect myadmin/myadmin
Connected.
SQL> grant create view to scott;
Grant succeeded.
SQL> create table t(x int);
Table created.
SQL> insert into t values(4);
1 row created.
SQL> commit;
Commit complete.
SQL> grant select on t to scott;
Grant succeeded.
SQL> --
SQL> connect scott/tiger
Connected.
SQL> create view v as select * from myadmin.t;
View created.
SQL> select * from v;
X
----------
4

How do I connect as newly created user through SQL Developer on Oracle Autonomous?

I have created a user(new_user) with a password.
I have granted create session to that user.
I still cannot connect to database as new_user.
ORA-01017.
I can connect as admin.
I can see the user(new_user) in the other users menu in SQL Developer.
When I go to create a table like CREATE TABLE new_user.SALES, I get ORA-01918: user 'NEW_USER' does not exist.
I can right-click and create a table.
I know I have the right password.
Sounds very much like the double quotes issue.
Here's how it is supposed to be done:
SQL> connect sys as sysdba
Enter password:
Connected.
SQL>
SQL> create user new_user identified by new_user
2 default tablespace users
3 temporary tablespace temp
4 quota unlimited on users;
User created.
SQL> grant create session, create table to new_user;
Grant succeeded.
SQL> connect new_user/new_user
Connected.
SQL> create table test (id number);
Table created.
This is what I suspect you did: drop the old user first:
SQL> connect sys as sysdba
Enter password:
Connected.
SQL> drop user new_user cascade;
User dropped.
SQL>
Now, start over. Pay attention to all double quotes in the following code:
SQL> create user "new_user" identified by new_user
2 default tablespace users
3 temporary tablespace temp
4 quota unlimited on users;
User created.
SQL> grant create session, create table to new_user;
grant create session, create table to new_user
*
ERROR at line 1:
ORA-01917: user or role 'NEW_USER' does not exist
SQL> grant create session, create table to "new_user";
Grant succeeded.
SQL> connect new_user/new_user
ERROR:
ORA-01017: invalid username/password; logon denied
Warning: You are no longer connected to ORACLE.
SQL> connect "new_user"/new_user
Connected.
SQL> create table new_user.test (id number);
create table new_user.test (id number)
*
ERROR at line 1:
ORA-01918: user 'NEW_USER' does not exist
SQL> create table "new_user".test (id number);
Table created.
SQL>
See? If you created it using double quotes, every time you reference it, you must use double quotes.
I suggest you get rid of them (double quotes) when working with Oracle. That includes users, table names, column names, procedure names, everything.

What are roles and privileges to give a user in order to perform CRUD(on Oracle 12)

I'm creating a USER on Oracle 12 c database, using TOAD.
After creating the TABLESPACE, I'm creating the USER. I'm a little confusing about the many ROLES and PRIVILEGES that can be given to a USER.
What are the minimum/standard roles and privileges a user must be given in order to perform CRUD operation and being able to 'edit' the database (create or delete table, DROP the schema ecc) from TOAD?
Thank you
It depends on what operations are you going to perform. If you want to work only with tables in your own db schema, then the following privileges are usually enough to start:
grant create session to <your_user>;
grant create table to <your_user>;
You have the default rights to insert/update/delete/select tables which you own.
Tablespace quota:
alter user <your_user> quota unlimited on <your_tablespace_name>;
It's better to set the default tablespace for the user. In this case you can omit the tablespace name in a create table statement.
alter user <your_user> default tablespace <your_tablespace_name>;
A link to the documentation - Privileges
Grant the user the following privileges:
CREATE SESSION (in order to allow the user to connect to the database)
INSERT
UPDATE
DELETE
SELECT
Use the below command to grant privileges to the user (you need to login as SYS or SYSTEM or another user that has GRANT privilege):
GRANT CREATE SESSION, SELECT, UPDATE, DETETE, INSERT TO user_name
Here's a suggestion you might (or might not) want to follow.
As a privileged user (such as SYS), check tablespaces available in your database. I'm using 11g XE (Express Edition) which shows the following:
SQL> show user
USER is "SYS"
SQL> select tablespace_name from dba_tablespaces;
TABLESPACE_NAME
------------------------------
SYSTEM
SYSAUX
UNDOTBS1
TEMP --> temporary
USERS --> my data
Now, create a user:
SQL> create user mdp identified by pdm
2 default tablespace users
3 temporary tablespace temp
4 quota unlimited on users;
User created.
Quite a long time ago, there were two popular predefined roles named CONNECT and RESOURCE which were granted some of the most frequent privileges so people just loved to grant those roles to newly created users.
Nowadays, you shouldn't be doing that: grant only minimal set of privileges your user might need. The first one is CREATE SESSION; without it, your user won't even be able to establish a connection.
SQL> grant create session to mdp;
Grant succeeded.
Then, you'll want to create some tables so - grant it:
SQL> grant create table to mdp;
Grant succeeded.
OK, let's connect as newly created user and do something:
SQL> connect mdp/pdm#xe
Connected.
SQL> create table test (id number);
Table created.
SQL> insert into test id values (1);
1 row created.
SQL> drop table test;
Table dropped.
SQL>
Nice; I can create tables, insert/update/delete/select from them. For beginning, that's quite enough. However, when it turns out that you'd want to, for example, create a view, it won't work until you grant it that privilege:
SQL> create view v_dual as select * From dual;
create view v_dual as select * From dual
*
ERROR at line 1:
ORA-01031: insufficient privileges
SQL> connect sys#xe as sysdba
Enter password:
Connected.
SQL> grant create view to mdp;
Grant succeeded.
SQL> connect mdp/pdm#xe
Connected.
SQL> create view v_dual as select * From dual;
View created.
SQL>
And so forth; don't grant anything just because you might need it - grant it if & when you need it. Especially pay attention to system privileges which can potentially be dangerous if you don't know what you're doing.

"How to recover a schema dropped after EXPDP without doing the impdp?

I was playing - for my upcoming project- how to perform expdp and impdp on play environment which is two levels away from the test environment . So i did expdp with scott/tiger and exported the scott schema. However, out of curiosity, I dropped Scott schema from the database (expecting to do impdp in the same database) then I got a lot of errors and lost the Scott schema from the database.
Is there I was I can recover Scott schema from the dumpfile?
This is what I did:
expdp scott/tiger schemas=scott directory=test_dir dumpfile=scott.dmp logfile=expdpscott.log
impdp scott/tiger schemas=scott directory=test_dir dumpfile=scott.dmp logfile=impdpscott.log
.
.
.
then I got this:
Job "SCOTT"."SYS_IMPORT_SCHEMA_01" completed with 4 error(s) at 19:13:31"
... then I did:
drop user Scott cascade;
and then
impdp scott/tiger schemas=scott directory=test_dir dumpfile=scott.dmp logfile=impdpscott.log
then I got this error:
UDI-01017: operation generated ORACLE error 1017 ORA-01017: invalid
username/password; logon denied
... Now I realized that I did a stupid thing (which is good as a learner).
How can I get back or recover the dropped scott schema?
It would be nice if you posted which errors you got in step #2; maybe they were irrelevant.
Now, as you dropped Scott, connect as a privileged user (such as SYS) and create user Scott. Here's an example:
check list of tablespaces in your database
create user
grant it some privileges
SQL> select tablespace_name from dba_tablespaces;
TABLESPACE_NAME
------------------------------
SYSTEM
SYSAUX
UNDOTBS1
TEMP
USER_DATA
APEX
APEX_9695076087226093
7 rows selected.
SQL> create user littlefoot identified by lion
2 default tablespace user_data
3 temporary tablespace temp
4 profile default
5 quota unlimited on user_data;
User created.
SQL>
SQL> grant create session to littlefoot;
Grant succeeded.
SQL> grant create table to littlefoot;
Grant succeeded.
SQL> grant create procedure to littlefoot;
Grant succeeded.
SQL> grant create sequence to littlefoot;
Grant succeeded.
SQL> grant create view to littlefoot;
Grant succeeded.
SQL> grant create trigger to littlefoot;
Grant succeeded.
SQL>
Once you do that, run IMPDP once again.

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