Oracle raises ORA-00933 when it encounters malformed SQL syntax, such as misplaced keywords, missing commas, or an unexpected trailing character.
ORA-00933: SQL command not properly ended appears when Oracle cannot parse a SQL statement because of syntax mistakes like extra characters or mis-ordered clauses. Verify the clause order, commas, and parentheses, then rerun the corrected statement to resolve the error.
ORA-00933: SQL command not properly ended
ORA-00933 is an Oracle syntax error that tells you the database parser found something out of place in your SQL statement.
The error stops execution immediately, so the query never reaches the optimizer or returns data. Fixing it quickly keeps workflows and applications running smoothly.
Oracle expects keywords, commas, and parentheses in a strict order.
Any deviation—such as placing a WHERE before a GROUP BY subquery—triggers ORA-00933.
Trailing semicolons inside SQL*Plus blocks, stray characters copied from spreadsheets, and vendor-agnostic syntax like LIMIT also confuse Oracle and raise the error.
Read the statement from the keyword shown in the error stack and look for misplaced commas, alias names, or missing FROM clauses.
Rewrite vendor-specific features using Oracle-compatible alternatives, for example replace LIMIT with FETCH FIRST n ROWS ONLY.
Multiple INSERT VALUES without commas, UNION queries missing SELECT after UNION, and UPDATE…FROM joins copied from PostgreSQL all produce ORA-00933.
Correct the syntax shown in the examples below.
Adopt a style guide, format SQL with a linter, and run code reviews. Galaxy’s AI Copilot auto-formats queries and flags non-Oracle keywords before execution, preventing ORA-00933 in development.
ORA-00911 (invalid character) fires on illegal symbols, while ORA-00905 (missing keyword) indicates a required word is absent. Both stem from similar syntax issues and share many fixes.
No. Oracle stops at the first token it cannot parse, which is often after the real mistake. Check a few tokens earlier.
No. The error is a parser safeguard. The only way to avoid it is writing valid SQL.
Different databases implement proprietary syntax. Convert LIMIT, AUTO_INCREMENT, and UPDATE … FROM to Oracle equivalents.
Galaxy’s context-aware AI Copilot detects non-Oracle keywords, formats code, and highlights syntax gaps before the query reaches the database.
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