All errors › ORA errors
ORA-00028: Your session has been killed
What it means
A DBA or a resource manager rule killed the session (ALTER SYSTEM KILL SESSION). Its open transaction was rolled back.
How to fix it
Reconnect. Applications using pools should validate connections on borrow. Ask the DBA why it was killed if it repeats (idle time, runaway query rule).
Catch it before it runs
ORA Error Helper
Explains ORA-/PLS- codes inside JetBrains IDEs and DataGrip. PL/SQL Lint
Flags risky PL/SQL patterns while you type. Oracle Plan Reader
Reads execution plans and points at the slow step. PL/SQL in Practice
Kindle book with practical PL/SQL for working developers.
Explains ORA-/PLS- codes inside JetBrains IDEs and DataGrip. PL/SQL Lint
Flags risky PL/SQL patterns while you type. Oracle Plan Reader
Reads execution plans and points at the slow step. PL/SQL in Practice
Kindle book with practical PL/SQL for working developers.
Nearby errors
Updated 2026-11-12.