Can an Oracle 19c database dblink to an Oracle 10.2.3 database? I have an Oracle 12.1.0.2 database that dblinks to an Oracle 10.2.0.3.0 database.
I am upgrading the Oracle 12.1.0.2 database to 19c (12.2.0.3).
Will my dblinks to the Oracle 10.2.0.3.0 database continue to work?
Based on this document from Oracle Support, the answer appears to be &quot;No&quot;. A 19c client (the owner of your DB Link) is only supported/compatible with a server version of 11.2 or greater.
Conversely, a 10.2 database can only support a client as new as 12.1, so any upgrade of your 12.1 database to any newer version will break your db link.