What is the difference between dba_services and v$services?

Why do we see differences in output between dba_services and v$services view ?

SQL>select name from v$services;

NAME
------------------------------
SYS$BACKGROUND
SYS$USERS
ebs_accnt
accnt
cdbXDB
cdb
accnt_ebs_patch

7 rows selected.



SQL>  select name from dba_services;

NAME
------------------------------
SYS$BACKGROUND
SYS$USERS
accntXDB
cdb
cdbXDB
cdb.skead.no
ebs_PATCH

7 rows selected.

New services were added and few services were stopped recently.

Answer:

The difference is due to the following:

* DBA_SERVICES - This view lists all the services that are in the database. This includes both started and stopped services.
* V$SERVICES - This view lists only the services that were started some time since the instance startup. When you stop a running service, that service will still be listed in this view until the next instance restart.

Oracle states that "The difference between these outputs does not pose any issue."

Source: Differences in outputs between DBA_SERVICES and V$SERVICES view (Doc ID 1496074.1) found at support.oracle.com