Getting error while resetting user password : ORA-30040: Undo tablespace is offline
SQL> alter user system identified by oracle123;
alter user system identified by oracle123
*
ERROR at line 1:
ORA-65048: error encountered when processing the current DDL statement in
pluggable database
ORA-30040: Undo tablespace is offline
------
I checked the status of all tablespaces, its showing online
SQL> select tablespace_name, status from cdb_tablespaces;
TABLESPACE_NAME STATUS
------------------------------ ---------
SYSTEM ONLINE
SYSAUX ONLINE
UNDOTBS1 ONLINE
TEMP ONLINE
USERS ONLINE
SYSTEM ONLINE
SYSAUX ONLINE
UNDOTBS1 ONLINE
TEMP ONLINE
USERS ONLINE
SYSTEM ONLINE
TABLESPACE_NAME STATUS
------------------------------ ---------
SYSAUX ONLINE
UNDOTBS1 ONLINE
TEMP ONLINE
14 rows selected.
please suggest how to fix it.