gistfile1.txt

postgres=# select * from pg_file_settings where name = 'max_connections';
               sourcefile               | sourceline | seqno |      name       | setting | applied | error 
----------------------------------------+------------+-------+-----------------+---------+---------+-------
 /var/lib/postgres/data/postgresql.conf |         64 |     1 | max_connections | 100     | t       | 
(1 row)

gistfile2.txt

postgres=# select * from pg_file_settings where name = 'max_connections';
               sourcefile               | sourceline | seqno |      name       | setting | applied |            error             
----------------------------------------+------------+-------+-----------------+---------+---------+------------------------------
 /var/lib/postgres/data/postgresql.conf |         64 |     1 | max_connections | 100     | f       | 
 /var/lib/postgres/data/postgresql.conf |        633 |    13 | max_connections | 200     | f       | setting could not be applied