I am in a process of upgrading postgresql 12 to version 13, when I am testing it getting the below error
could not load library $carlib/plprofiler "/usr/lib/postgresql/13/lib/plprofiler.so": /usr/lib/postgresql/13/lib/plprofiler.so: undefined symbol: hash_uint32
Could you please let me know how to install plprofiler on version 13 to pass this error.
Did you install plprofiler for PostgreSQL 13?
If yes, then you need to uninstall plprofiler before upgrade. Some extensions doesn't support upgrade between major versions, or doesn't supports upgrade Postgres and upgrade the extension in one step.