The data dictionary view ALL_PROCEDURES (or USER_PROCEDURES if you just want your packages). Find out more.
select procedure_name
from all_procedures
where owner = 'YOU'
and object_name = 'YOUR_PACKAGE'
This lists the public procedures exposed in the package specification. There is no easy way of retrieving the private procedures (that is, those specified only in the package body) except by processing the source text. Oracle do provide a utility PL/SCOPE which we can use to gather this information, but it requires us to change session settings and recompile our code, so it may not be suitable in all situations. Find out more.
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