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ORA-00001 Unique Constraint Violated Solution

ORA-00001 Unique Constraint Violated Solution

Have you gotten an “ORA-00001 unique constraint violated” error? Learn what has caused it and how to resolve it in this article. ORA-00001 Cause If you’ve tried to run an INSERT or UPDATE statement, you might have gotten this error: ORA-00001 unique... Read more
ORA-00609 and ORA-609 Solution

ORA-00609 and ORA-609 Solution

Have you gotten an ORA-00609 error or ORA-609 error? Learn how to fix it and what the cause is in this article. Two Errors with Similar Codes There are two ORA-609 errors that I have seen: ORA-00609: could not attach to incoming connection ORA-609: opiodr aborting... Read more
ORA-00609 and ORA-609 Solution

ORA-12154 TNS Connection Identifier Solution

Have you gotten an “ORA-12154: TNS:could not resolve the connect identifier specified” error? Learn what causes it and how to resolve it in this article. ORA-12154 Cause If you attempt to access or log on to an Oracle database, you might get this error:... Read more
ORA-01031 insufficient privileges Solution

ORA-01031 insufficient privileges Solution

Are you getting the “ORA-01031 insufficient privileges” error? Learn what causes this error and how to resolve it in this article. ORA-01031 Cause The cause of the ORA-01031 error is that you’re trying to run a program or function and you don’t... Read more
ORA-00937: not a single-group group function Solution

ORA-00937: not a single-group group function Solution

Have you received an ORA-00937: not a single-group group function error? Learn what it is and how to fix it in this article. ORA-00937: not a single-group group function The ORA-00937 error occurs when a query has an aggregate function (e.g. COUNT, MIN, MAX, SUM, or... Read more