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select a.blocks,a.bytes,a.bytes/1024/1024 from user_segments a
where a.segment_name='B_M_DZYH_CUST_SIGN_FACT';
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create table TEST_1228 as select * from user_tables;
insert into TEST_1228  select * from TEST_1228 ;
insert into TEST_1228  select * from TEST_1228 ;
insert into TEST_1228  select * from TEST_1228 ;
insert into TEST_1228  select * from TEST_1228 ;
insert into TEST_1228  select * from TEST_1228 ;
commit;
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select a.blocks,a.bytes,a.bytes/1024/1024 from dba_segments a
where a.segment_name='TEST_1228'
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delete from TEST_1228 ;
commit;
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select a.blocks,a.bytes,a.bytes/1024/1024 from dba_segments a
where a.segment_name='TEST_1228'
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alter table TEST_1228 enable row movement
alter table TEST_1228 shrink space
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select a.blocks,a.bytes,a.bytes/1024/1024 from dba_segments a
where a.segment_name='TEST_1228'
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