Find Invalid Objects in Oracle DBA

An Simple Sql Script can help you to Find all the Invalid Objects

select count(*) from dba_objects where status = 'INVALID';

If the count is large, proceed with step 5.
Otherwise, proceed with step 9

 Compile Invalid Packages
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Compile/Reload Applications Database Entities menu
Compile APPS schema

Re-create Missing Grants/Synonyms
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Maintain Applications Database Entities
Re-create grants and synonyms for APPS schema

Validate APPS Schema
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Maintain Applications Database Entities
Validate APPS schema

Check the output of Validate APPS schema (in APPS.lst)
Make sure there are no invalid objects and no missing grants/synonyms
If there are you can repeat the above steps

Check for the number of invalid objects (should be minimal)