You need to specify the packagesSource codeBackup export:
Sets long 10240000
Spool c: \ package. SQL
Select text from all_source where ....
Spool off
-- Find the required package name
Select *
From all_objects t
Where T. object_type = 'package'
And owner = 'apps'
And trunc (T. last_ddl_time)> to_date ('2017-3-11 ', 'yyyy-MM-DD ')
And trunc (T. Created)> to_date ('2017-3-15 ', 'yyyy-MM-DD ')
Order by T. Created
-- Find the corresponding text based on the package name.
Select X .*
From all_source x
Where X. Owner = 'apps'
And exists
(Select 1
From all_objects t
Where T. object_type = 'package'
And owner = 'apps'
And trunc (T. last_ddl_time)> to_date ('2017-3-11 ', 'yyyy-MM-DD ')
And trunc (T. Created)> to_date ('2017-3-15 ', 'yyyy-MM-DD ')
And X. Name = T. object_name)
And then export it to the text.
20110926
View which packages or procedure references a table
Select X .*
From all_source x
Where instr (X. Text, 'table _ name')> 0