The following lines contain the word 'select', 'insert', 'update' or 'delete':
select tag
into ret_value
from fnd_lookup_values
where lookup_type = 'EXTERNAL_SCHEMA'
and lookup_code = x_lookup_code
and language = userenv('LANG');
select oracle_id
into cnt
from fnd_oracle_userid
where oracle_username = upper(schema_name);