ORA-00021: session attached to some other process; cannot switch session

Cause: The user session is currently used by others.

Action: Do not switch to a session attached to some other process.

Error Type: ORA

• Additional information for ORA-00021: session attached to some other process; cannot switch session00021
Discussions and solutions for Oracle Database Error ORA-00021: session attached to some other process; cannot switch session Developer anwers for Oracle Database Error ORA-00021: session attached to some other process; cannot switch session FAQs for ORA-00021: session attached to some other process; cannot switch session search others tips for ORA-00021: session attached to some other process; cannot switch session