All errors › ORA errors
ORA-12899: Value too large for column
What it means
A string is longer than the column size; the message shows the actual and maximum length. With multi-byte character sets (AL32UTF8) a VARCHAR2(10 BYTE) column may hold fewer than 10 characters.
How to fix it
Widen the column or define it with CHAR semantics (VARCHAR2(10 CHAR)), or truncate/validate the input (SUBSTRB for byte limits).
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.