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Oracle表空间-还原表空间新建，
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1、新建
sql> create undo tablespace lianxi_undo 2 datafile 'C:\orcl1122\disk5\lianxi_undo.dbf' 3 size 20M; Tablespace created
sql> 2、
查询 sql> select * from dba_tablespaces where tablespace_name like '%LIANXI%'; TABLESPACE_NAME BLOCK_SIZE INITIAL_EXTENT NEXT_EXTENT MIN_EXTENTS MAX_EXTENTS MAX_SIZE PCT_INCREASE MIN_EXTLEN STATUS CONTENTS LOGGING FORCE_LOGGING EXTENT_MANAGEMENT ALLOCATION_TYPE PLUGGED_IN SEGMENT_SPACE_MANAGEMENT DEF_TAB_COMPRESSION RETENTION BIGFILE PREDICATE_EVALUATION ENCRYPTED COMPRESS_FOR ------------------------------ ---------- -------------- ----------- ----------- ----------- ---------- ------------ ---------- --------- --------- --------- ------------- ----------------- --------------- ---------- ------------------------ ------------------- ----------- ------- -------------------- --------- ------------ LIANXI 8192 57344 57344 1 2147483645 2147483645 0 57344 ONLINE PERMANENT LOGGING NO LOCAL UNIFORM NO AUTO DISABLED NOT APPLY NO HOST NO LIANXI_UNDO 8192 65536 1 2147483645 2147483645 65536 ONLINE UNDO LOGGING NO LOCAL SYSTEM NO MANUAL DISABLED NOGUARANTEE NO HOST NO
sql>
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