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Hello, If you get this error, there are some multiple declarations for the identifications like below code. DECLARE zip_code INTEGER; Zip_Code INTEGER; -- duplicate identifier, despite Z/z case difference BEGIN zip_code := 90120; -- raises error here because of duplicate identifiers END; / Check your declarations and delete reiterated declaration one. Loves,

I created some indexes for a table. When I try to delete index which belong to that table, I got error ORA-02429.  To overcome with this issue I did something as bellow; alter table TABLE_NAME drop constraint INDEX_NAME; drop index INDEX_NAME; Loves,