Find differences between two tables

DBMS_RECTIFIER_DIFF.DIFFERENCES()
注意：
1.missing_rows_oname1，missing_rows_oname2要手工创建。
2.If this package does not exist in the database, run script $ORACLE_HOME/rdbms/admin/catrep.sql as sys

missing_rows_oname1结构和2个数据表相同。
missing_rows_oname2有present varchar2(100),absent varchar2(100),r_id rowid这3列