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CREATE MATERIALIZED VIEW LOG ON ONOFF;
CREATE PUBLIC DATABASE LINK A2B CONNECT TO USERNAME IDENTIFIED BY PASSWORD USING '(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.8)(PORT=1521))
)
(CONNECT_DATA =
(SERVICE_NAME=ORCL)
)
)';
create materialized view onoff_mv refresh fast start with sysdate next
sysdate+1/24*60 as select * from ONOFF@A2B;