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ORA-06508: PL/SQL: could not find program unit being called
What it means
A called unit is missing or invalid at run time, often because a package was recompiled or dropped while the session held its state, or a dependency is invalid.
How to fix it
Recompile invalid objects (UTL_RECOMP or ALTER ... COMPILE), check ALL_ERRORS, and reconnect sessions that cached the old state. Check privileges on the called unit.
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.