Connecting to PDB fails with ORA-44787: Service cannot be switched into
If we try to connect PDB getting below error SQL> alter session set container="dev2"; ERROR: ORA-03114: not connected to ORACLE Solution: Check listener is working normally Below action plan no need application bounce Close and reopen the PDB SQL> alter pluggable database "dev2" close; Pluggable database altered. SQL> alter pluggable database "dev2" open; Pluggable database altered. SQL> alter session set container="dev2"; Session altered. If “alter pluggable database "dev2" close” command taking time Please check how many users connected database ps -ef |grep -i local=no If more user connected open duplicate session connect sqlplus and startup force command. But startup force command is not recommended based on the scenarios we can use it.