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ORA-06501: PL/SQL: program error

What it means

An internal PL/SQL error (PROGRAM_ERROR).

How to fix it

Check for known bugs for your version; simplify the code path.

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.

Nearby errors

Updated 2026-11-12.