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Oracle Error Messages – Cause and Solutions

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

 

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