On Wednesday, July 27, 2022, Daulat <daulat.dba@xxxxxxxxx> wrote:
Hi Team,Please help on the postgres upgrade issue. We are upgrading from v10 to v14Message:Your installation references loadable libraries that are missing from thenew installation. You can add these libraries to the new installation,or remove the functions using them from the old installation. A list ofproblem libraries is in the file:loadable_libraries.txtFailure, exitingpostgres@test-Lenovo-C40-30:/etc/postgresql/10$ cat loadable_libraries.txt could not load library "$libdir/postgis-2.5": ERROR: could not access file "$libdir/postgis-2.5": No such file or directoryIn database: Test_DBcould not load library "$libdir/rtpostgis-2.5": ERROR: could not access file "$libdir/rtpostgis-2.5": No such file or directoryIn database: Test_DBpostgres@test-Lenovo-C40-30:/etc/postgresql/10
IOW, you are using PostGIS, read their documentation and inspect their version matrix and decide on an upgrade path you want to follow, ensuring that when you run pg_upgrade the same version of PostGIS exists in the old and new clusters.
Or take the first option and uninstall PostGIS on the existing server.
David J.