https://community.esri.com/t5/java-maps-sdk-questions/arcsde-sdk-can-t-connect-to-oracle-19c/m-p/1144548#M2567 <P>Has the connection worked recently and absolutely no changes have happened to you software versions since?</P><P>If your Oracle version was just recently updated from 12c to 19c it could be a comparability/software version problem. Check out your current desktop (either Pro or ArcGIS desktop) version, and the version used to create or update your geodatabase.&nbsp;&nbsp;</P><P><A href="https://desktop.arcgis.com/en/arcmap/latest/manage-data/using-sql-with-gdbs/example-finding-the-geodatabase-release.htm" target="_blank">https://desktop.arcgis.com/en/arcmap/latest/manage-data/using-sql-with-gdbs/example-finding-the-geodatabase-release.htm</A></P><P>Then look up compatability. You might need to upgrade your EGDB.&nbsp;&nbsp;</P><P>It could also be that your SDK version is no longer compatible with your desktop or Oracle version. I'd start there.&nbsp;</P> Wed, 16 Feb 2022 10:27:05 GMT KimberlyGarbade 2022-02-16T10:27:05Z https://community.esri.com/t5/java-maps-sdk-questions/arcsde-sdk-can-t-connect-to-oracle-19c/m-p/1144527#M2566 <P>I am using ArcSDE sdk 10.2.2 to direct connect with oracle 19c but its not working although it works fine when I use oracle 12c.&nbsp;<BR />The error I am getting is "Underline database error". Any suggestion will be helpful. Thanks in advance.</P> Wed, 16 Feb 2022 08:07:04 GMT https://community.esri.com/t5/java-maps-sdk-questions/arcsde-sdk-can-t-connect-to-oracle-19c/m-p/1144527#M2566 HammadMuddassir 2022-02-16T08:07:04Z https://community.esri.com/t5/java-maps-sdk-questions/arcsde-sdk-can-t-connect-to-oracle-19c/m-p/1144548#M2567 <P>Has the connection worked recently and absolutely no changes have happened to you software versions since?</P><P>If your Oracle version was just recently updated from 12c to 19c it could be a comparability/software version problem. Check out your current desktop (either Pro or ArcGIS desktop) version, and the version used to create or update your geodatabase.&nbsp;&nbsp;</P><P><A href="https://desktop.arcgis.com/en/arcmap/latest/manage-data/using-sql-with-gdbs/example-finding-the-geodatabase-release.htm" target="_blank">https://desktop.arcgis.com/en/arcmap/latest/manage-data/using-sql-with-gdbs/example-finding-the-geodatabase-release.htm</A></P><P>Then look up compatability. You might need to upgrade your EGDB.&nbsp;&nbsp;</P><P>It could also be that your SDK version is no longer compatible with your desktop or Oracle version. I'd start there.&nbsp;</P> Wed, 16 Feb 2022 10:27:05 GMT https://community.esri.com/t5/java-maps-sdk-questions/arcsde-sdk-can-t-connect-to-oracle-19c/m-p/1144548#M2567 KimberlyGarbade 2022-02-16T10:27:05Z