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ORA-00911: Invalid character
What it means
The statement contains a character the SQL parser does not accept: very often a trailing semicolon sent through JDBC/ODBC/EXECUTE IMMEDIATE, a smart quote copied from a document, or a non-ASCII character in an identifier.
How to fix it
Remove the trailing ";" from SQL executed by an application or EXECUTE IMMEDIATE (PL/SQL blocks keep their final ";" and END). Replace typographic quotes with straight quotes. Quote identifiers that need special characters.
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.