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.
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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