All Oracle errors
ORA-00900sql

Invalid SQL statement

ORA-00900: invalid SQL statement

Why it happens

Oracle could not parse the text as a SQL statement — a typo, a missing semicolon in a tool context, or client-side text that is not SQL.

How to fix it

Check spelling and keywords, confirm the statement is valid for this Oracle version, and run it from SQL*Plus/SQL Developer to see the full error line.

A note on ORA-00900

This entry is part of a hand-curated set of ORA-, FRM-, REP- and TNS- codes that actually turn up in production Oracle estates — SQL*Plus, APEX, 19c/21c, ODP.NET apps, Oracle Forms 6i/12c and Reports included. The message text above is the canonical wording; the cause and fix are written in plain language so a developer or DBA can act without digging through pages of Oracle reference docs first.

Codes outside this list of 44 are far less common. If you hit one, the official Oracle error reference and your instance's alert or listener log remain the authoritative source.

Related sql errors

ORA-00001 · Unique constraint violated ORA-00904 · Invalid identifier ORA-00933 · SQL command not properly ended

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