Enable and disable restricted mode of Pluggable database in Oracle
SQL> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED 2 PDB$SEED READ ONLY NO 3 XEPDB1 READ WRITE NSQL>SQL> alter pluggable database xepdb1 open restricted force;
Pluggable database altered.
SQL> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED 2 PDB$SEED READ ONLY NO 3 XEPDB1 READ WRITE YES
SQL> alter pluggable database xepdb1 close;
Pluggable database altered.
SQL> alter pluggable database xepdb1 open restricted;
Pluggable database altered.
SQL> show pdbs
CON_ID CON_NAME OPEN MODE RESTRICTED