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PLS-00452: Subprogram violates its associated pragma

What it means

A function marked with RESTRICT_REFERENCES or used with PRAGMA UDF/deterministic rules does something not allowed.

How to fix it

Remove the side effect or the pragma.

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.

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Updated 2026-11-12.