Cyril SCETBON wrote: > I get the following error : > > postgres=# DROP TABLESPACE IF EXISTS my_tbs; > ERROR: tablespace "my_tbs" is not empty > > I've searched in pg_class and I'm not able to find a relation which > refers to my_tbs with : > > postgres=# select * from pg_class where reltablespace=100456; [...] > (0 rows) > > 100456 has been found with : > > /oid2name -s|grep my_tbs > > Any idea ? You can find the dependent objects with: SELECT t.relname AS catalog, d.objid AS oid_dependent FROM pg_catalog.pg_class t JOIN pg_catalog.pg_depend d ON (t.oid = d.classid) WHERE refobjid = 100456; This will give you a list of system catalog tables and OIDs. You can find out more about an dependent object by searching for the OID in the system catalog. Yours, Laurenz Albe