This page contains a list of all the Oracle error messages that I have written about, and the links to their posts.
On each post, you will find information about the cause of the error, as well as one or many solutions (depending on the error).
Some posts also explain how to prevent the error from happening in the future.
Oracle Error Messages
| Code | Message |
| ORA-00001 | ORA-00001 unique constraint violated |
| ORA-00609 | ORA-00609: could not attach to incoming connection |
| ORA-00904 | ORA-00904 invalid identifier |
| ORA-00907 | ORA-00907: missing right parenthesis |
| ORA-00911 | ORA-00911 invalid character |
| ORA-00933 | ORA-00933 SQL command not properly ended |
| ORA-00936 | ORA-00936: missing expression |
| ORA-00937 | ORA-00937: not a single-group group function |
| ORA-00942 | ORA-00942 table or view does not exist |
| ORA-00972 | ORA-00972 identifier is too long |
| ORA-00979 | ORA-00979 not a group by expression |
| ORA-01017 | ORA-01017 invalid username/password; logon denied |
| ORA-01031 | ORA-01031 insufficient privileges |
| ORA-01400 | ORA-01400: cannot insert null into (string) |
| ORA-01722 | ORA-01722 invalid number |
| ORA-06502 | ORA-06502 PLSQL numeric or value error |
| ORA-06512 | ORA-06512 at line |
| ORA-06550 | ORA-06550 line N column N |
| ORA-12154 | ORA-12154 TNS Connection Identifier |
| ORA-12514 | ORA-12514: TNS:listener does not currently know or service requested in connect descriptor |
| ORA-20000 | none |
| ORA-609 | ORA-609: opiodr aborting process unknown ospid |