Validate Invalid Objects in oracle database

We can validate invalid database objects in oracle database using the following ways.

1. Find invalid objects Example:

   --To Find the number of invalid objects
   SQL> select count(*) from dba_objects where status='INVALID';
    SQL> select owner,object_type,count(*) from dba_objects where status='INVALID' group by owner,object_type;
    --To identify the object name and their types and owner
   SQL> select owner, object_name,object_type from dba_objects where status ='INVALID';

2. Manual method of validation. Example:

   SQL> Alter procedure <owner>.<procedure_name> compile;
   SQL > Alter function <owner>.<function_name> compile;
   SQL> Alter view <owner>.<view_name> compile;
   SQL> Alter package <owner>.<package_name> compile;
   SQL>Alter package <owner>.<package_name> compile body;
   SQL> Alter materialized view <owner>.<Package_name> Compile;

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