How to load XML file data into Oracle Apps database tables

Following is the script to insert XML data from a file to oracle database tables

INSERT INTO XX_ONRPTS_STG_TAB (DOCUMENT_NUM,
                               HEADER_ID,
                               RELEASE_NO,
                               RELEASE_ID,
                               DOCUMENT_LINE_NUM,
                               ITEM_NUM,
                               REC_QUANTITY,
                               LINE_ID,
                               LINE_LOCATION_ID,
                               TRANSACTION_ID,
                               FILE_NAME)

              SELECT X1.DOCUMENT_NUM,
                     X1.HEADER_ID,
                     X1.RELEASE_NO,
                     X1.RELEASE_ID,
                     X2.DOCUMENT_LINE_NUM,
                     X2.ITEM_NUM,
                     X2.REC_QUANTITY,
                     X2.LINE_ID,
                     X2.LINE_LOCATION_ID,
                     XX_ONRPTS_STG_TAB_S.NEXTVAL,
                     piv_file_name
                FROM XMLTABLE (
                        '/ORDER/PO/PO'
                        PASSING ACCT_DOC
                        COLUMNS HEADER_NO        FOR ORDINALITY,
                                DOCUMENT_NUM VARCHAR2 (240) PATH 'PO_NUMBER',
                                HEADER_ID NUMBER PATH 'HEADER_ID',
                                RELEASE_NO NUMBER PATH 'RELEASE_NO',
                                RELEASE_ID NUMBER PATH 'RELEASE_ID') X1,
                     XMLTABLE (
                        '$d/ORDER/PO_LINE[$hn]/PO_LINE'
                        PASSING ACCT_DOC AS "d", X1.HEADER_NO AS "hn"
                        COLUMNS DOCUMENT_LINE_NUM VARCHAR2 (240) PATH 'LINE_NUM',
                                ITEM_NUM VARCHAR2 (240) PATH 'PART_NO',
                                REC_QUANTITY NUMBER PATH 'QUANTITY',
                                LINE_ID NUMBER PATH 'LINE_ID',
                                LINE_LOCATION_ID NUMBER PATH 'LINE_LOCATION_ID') X2;


Following the sample XML data file: