How to alter tablespace add in pdb from cdb root

Question

Hi Experts,
Is there a way to run the "alter tablespace xx add tempfile ..." command in root cdb while the tablespace xx belongs to a pdb. Is it possible to do it without login or change session to pdb? Thanks.

Answer 1

Krishna-Oracle wrote:
You have to login into particular PDB using alter session set container command and then make changes.
You are confusing logging to PDB with setting PDB as current container. These are two completely different actions. Create common user:
SQL> connect /@sol12 as sysdba
Connected.
SQL> create user c##ommon identified by common container = all;
User created.
SQL> grant create session to c##ommon container = all;
Grant succeeded.
SQL> grant set container to c##ommon container = all;
Grant succeeded.
Create after login trigger for the common user in a PDB:
SQL> connect /@pdb1sol12 as sysdba
Connected.
SQL> create or replace
  2    trigger c##ommon_logon_trigger
  3      after logon
  4      on c##ommon.schema
  5      begin
  6          raise_application_error(-20500,'You are not allowed logging to this PDB.');
  7  end;
  8  /
Trigger created.
SQL>
Now I will login as c##ommon to CDB and with set container to PDB:
SQL> connect c##ommon@sol12
Enter password: ******
Connected.
SQL> alter session set container = pdb1sol12;
Session altered.
SQL>
As you can see, AFTER LOGON trigger wasn't executed. And now I will try logging to PDB:
SQL> connect c##ommon@pdb1sol12
Enter password: ******
ERROR:
ORA-00604: error occurred at recursive SQL level 1
ORA-20500: You are not allowed logging to this PDB.
ORA-06512: at line 2
Warning: You are no longer connected to ORACLE.
SQL>
Now you see SET CONTAINER != LOGIN.
SY.