The answer to @Rene is correct, but I believe that he needs an additional explanation. When choosing from all_dependencies you can run a query similar to the one below, which should provide you with all the objects that reference your SP.
SELECT * FROM all_dependencies WHERE "REFERENCED_NAME" = 'vcustomeraddresses';
You may be surprised when he returns empty-handed.
This is because the oracle is SENSITIVE. This means that you have to disable case sensitivity (if you are using the oracle version above 10g r2)
ALTER SESSION SET NLS_COMP=LINGUISTIC; ALTER SESSION SET NLS_SORT=BINARY_CI;
or upper both sides when comparing
SELECT * FROM all_dependencies WHERE upper("REFERENCED_NAME") = upper('vcustomeraddresses');
Hope this saves you time and frustration.
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