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oracle rman 环境建立
create tablespace rcatts datafile '/oradata/data/rcatts.dbf' size 50M
create user rcat identified by rcat default tablespace rcatts temporary tablespace temp quota unlimited on rcat;
grant connect,resource,recovery_catalog_owner to rcat;
grant unlimited tablespace to cat;
create catalog tablespace demo;
DROP TABLESPACE "rman" INCLUDING CONTENTS AND DATAFILES CASCADE CONSTRAINTS;