Some times we do not know about our schema exist in which db and which is our schema hare is the method to find db and schema name.
DECLARE
CURSOR ashish_db_name
IS
SELECT NAME
FROM v$database;
My_db_name VARCHAR2 (4000);
BEGIN
OPEN ashish_db_name;
FETCH ashish_db_name
INTO My_db_name ;
CLOSE ashish_db_name;
htp.p('Schema Name:'||SYS_CONTEXT ('USERENV',
'CURRENT_SCHEMA'
));
htp.p('My DB Name:'|| My_db_name );
END;
Result
Schema Name:ASH_SCHEMA
My DB Name:ORCL