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  • How to Resolve Oracle Connection Issues

    calendar Nov 15, 2019 · 9 min read · sql-errors  ·
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    Learn some tips for resolving Oracle connection issues.


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  • ORA-20000 Cause and Solution

    calendar Apr 12, 2017 · 2 min read · sql-errors  ·
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    Have you gotten the ORA-20000 error when working with Oracle PL/SQL? Learn what causes it and how to resolve it in this article


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  • ORA-12514 Cause and Solution

    calendar Apr 7, 2017 · 4 min read · sql-errors  ·
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    Are you getting an "ORA-12514 TNS listener does not currently know or service requested in connect descriptor" error? Learn what causes it and how to resolve it in this error.


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  • ORA-01400: cannot insert null into (string) Solution

    calendar Mar 29, 2017 · 4 min read · sql-errors  ·
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    Have you gotten the "ORA-01400 cannot insert null into (string)" error? Learn what causes this and how to resolve it in this article.


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  • ORA-00972 identifier is too long Solution

    calendar Mar 24, 2017 · 2 min read · sql-errors  ·
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    Have you gotten an "ORA-00972 identifier is too long" error? Learn what caused it and how to resolve it in this article.


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  • ORA-00001 Unique Constraint Violated Solution

    calendar Mar 22, 2017 · 4 min read · sql-errors  ·
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    Have you gotten an "ORA-00001 unique constraint violated" error? Learn what has caused it and how to resolve it in this article.


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  • ORA-00609 and ORA-609 Solution

    calendar Mar 17, 2017 · 2 min read · sql-errors  ·
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    Have you gotten an ORA-00609 error or ORA-609 error? Learn how to fix it and what the cause is in this article.


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  • ORA-12154 TNS Connection Identifier Solution

    calendar Mar 15, 2017 · 4 min read · sql-errors  ·
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    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.


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  • ORA-01031 insufficient privileges Solution

    calendar Mar 10, 2017 · 4 min read · sql-errors  ·
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    Are you getting the "ORA-01031 insufficient privileges" error? Learn what causes this error and how to resolve it in this article.


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

    calendar Mar 8, 2017 · 3 min read · sql-errors  ·
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    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.


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Ben Brumm

Improve your database and SQL skills.
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