Importing table structure only consumes space in GB

Hello,
I have used oracle 9i Exp commmand to export a schema structure.(No rows) There are only 150 tables and the export is perfect without any warnings.
When i try to import into a different schema , I can see that it consumes 3 GB of space in the default tablespace for that schema. I checked the free space in the tablespace before importing...there is 3 GB of free space..
When i start import it gets full , and import hangs. It does not proceed any further. Im not able to understand, why 3 GB of space it is using for just the table structure.
Please help
Thanks

UNKNOWN007 wrote:
Hello,
I have used oracle 9i Exp commmand to export a schema structure.(No rows) There are only 150 tables and the export is perfect without any warnings.
When i try to import into a different schema , I can see that it consumes 3 GB of space in the default tablespace for that schema. I checked the free space in the tablespace before importing...there is 3 GB of free space..
When i start import it gets full , and import hangs. It does not proceed any further. Im not able to understand, why 3 GB of space it is using for just the table structure.neither are we without your export and import commands. I could take a guess though. That would be that your export uses compress=y either explicitly or because it's the default, and also that you are using dictionary managed tablespaces on your target. In that case each new table gets created with an initial extent the same size as the data on the source. In this case the immediate solution is not to use compress and the longer term one is to move as well to locally managed tablespaces.
still if we could see the commands you used then we wouldn't need to guess.
Niall Litchfield
http://www.orawin.info/

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user1118517 wrote:
Hi Guys,
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TIPS(18) : CREATING SCRIPTS TO RECREATE A TABLE STRUCTURE

제품 : SQL*PLUS
작성날짜 : 1996-11-12
TIPS(18) : Creating Scripts to Recreate a Table Structure
=========================================================
The script creates scripts that can be used to recreate a table structure.
For example, this script can be used when a table has become fragmented or to
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CREATES SCRIPT TO RECREATE A TABLE-STRUCTURE
INCL. STORAGE, CONSTRAINTS, TRIGGERS ETC.
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does not do anything to your database! To get anything done you have to run the
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parameter is 25% of the initial.
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tables.
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If your table contains a LONG-column, use the COPY
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USAGE
from SQL*Plus:
start reorgtb
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REORGS1.SQL contains code to save the current content of the table.
REORGS2.SQL contains code to rebuild the table structure.
undef tab;
set echo off
column a1 new_val stor
column b1 new_val nxt
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024))+1))||'M', /* > 1M new rounded up to nearest Megabyte */
decode(sign(512-sum(bytes)/1024), -1,'1M',
decode(sign(256-sum(bytes)/1024), -1,'512K',
decode(sign(128-sum(bytes)/1024), -1,'256K',
decode(sign(64-sum(bytes)/1024) , -1,'128K',
'64K'
a1,
decode(sign(1024-sum(bytes)/4096),-1,to_char((round(sum(bytes)/(4096*1
024))+1))||'M', /* > 1M new rounded up to nearest Megabyte */
decode(sign(512-sum(bytes)/4096), -1,'1M',
decode(sign(256-sum(bytes)/4096), -1,'512K',
decode(sign(128-sum(bytes)/4096), -1,'256K',
decode(sign(64-sum(bytes)/4096) , -1,'128K',
'64K'
b1
from user_extents
where segment_name=upper('&1');
set pages 0 feed off verify off lines 150
col c1 format a80
spool reorgs1.sql
PROMPT drop table bk_&1
prompt /
PROMPT create table bk_&1 storage (initial &stor) as select * from &1
prompt /
spool off
spool reorgs2.sql
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'||constraint_name||';'
from user_constraints where r_constraint_name
in (select constraint_name from user_constraints where
table_name=upper('&1')
and constraint_type in ('P','U'));
PROMPT drop table &1
prompt /
prompt create table &1
select decode(column_id,1,'(',',')
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,'LONG' ,'LONG '
,'LONG RAW','LONG RAW '
,'RAW' ,'RAW '
,'CHAR' ,'CHAR '
,'VARCHAR' ,'VARCHAR '
,'VARCHAR2','VARCHAR2 '
,'NUMBER' ,'NUMBER '
,'unknown')
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decode(data_type,'DATE' ,null
,'LONG' ,null
,'LONG RAW',null
,'RAW' ,decode(data_length,null,null
,'('||data_length||')')
,'CHAR' ,decode(data_length,null,null
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,'('||data_length||')')
,'VARCHAR2',decode(data_length,null,null
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,'('||data_precision||
decode(data_scale,null,null
,','||data_scale)||')')
,'unknown'),8,' ')
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from user_tab_columns
where table_name = upper('&1')
order by column_id
prompt )
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,' maxextents '||t.max_extents c1
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where s.segment_name = upper('&1') and
t.table_name = upper('&1')
and s.segment_type = 'TABLE'
prompt /
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user_tab_comments
where table_name=upper('&1');
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' is '''||comments||''';' c1 from user_col_comments
where table_name=upper('&1');
prompt insert into &1 select * from bk_&1
prompt /
set serveroutput on
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cursor c1 is select index_name,decode(uniqueness,'UNIQUE','UNIQUE')
unq
from user_indexes where
table_name = upper('&1');
indname varchar2(50);
cursor c2 is select
decode(column_position,1,'(',',')||rpad(column_name,40) cl
from user_ind_columns where table_name = upper('&1') and
index_name = indname
order by column_position;
l1 varchar2(100);
l2 varchar2(100);
l3 varchar2(100);
l4 varchar2(100);
l5 varchar2(100);
l6 varchar2(100);
l7 varchar2(100);
l8 varchar2(100);
l9 varchar2(100);
begin
dbms_output.enable(100000);
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dbms_output.put_line('create '||c.unq||' index '||c.index_name||' on
&1');
indname := c.index_name;
for q in c2 loop
dbms_output.put_line(q.cl);
end loop;
dbms_output.put_line(')');
select 'pctfree '||i.pct_free ,
'initrans '||i.ini_trans ,
'maxtrans '||i.max_trans ,
'tablespace '||i.tablespace_name ,
'storage (initial '||
decode(sign(1024-sum(e.bytes)/1024),-1,
to_char((round(sum(e.bytes)/(1024*1024))+1))||'M',
decode(sign(512-sum(e.bytes)/1024), -1,'1M',
decode(sign(256-sum(e.bytes)/1024), -1,'512K',
decode(sign(128-sum(e.bytes)/1024), -1,'256K',
decode(sign(64-sum(e.bytes)/1024) , -1,'128K',
'64K'))))) ,
' next '||
decode(sign(1024-sum(e.bytes)/4096),-1,
to_char((round(sum(e.bytes)/(4096*1024))+1))||'M',
decode(sign(512-sum(e.bytes)/4096), -1,'1M',
decode(sign(256-sum(e.bytes)/4096), -1,'512K',
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decode(sign(64-sum(e.bytes)/4096) , -1,'128K',
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from user_extents e,user_segments s, user_indexes i
where s.segment_name = c.index_name
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where table_name = upper('&1')
and constraint_type in ('U','P');
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from user_cons_columns
where table_name = upper('&1')
and constraint_name = cname
order by position;
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for q1 in c1 loop
cname := q1.constraint_name;
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delete_rule
from user_constraints c,
user_constraints r
where c.constraint_type='R' and
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c.table_name = upper('&1')
union
select c.constraint_name,c.r_constraint_name cname2,
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order by position;
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for q3 in c3 loop
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dbms_output.put_line('/');
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trigger_body ,
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from user_triggers
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trigger_body ,
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from user_triggers
where table_name = upper('&1') and when_clause is null
select 'alter trigger '||trigger_name||decode(status,'DISABLED','
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cursor c1 is
select 'alter table
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' add constraint ') a1,
decode(substr(constraint_name,1,4),'SYS_','
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search_condition a3,
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where table_name = upper('&1') and
constraint_type='C';
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b2 varchar2(100);
b3 varchar2(32000);
b4 varchar2(100);
b5 varchar2(100);
fl number;
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dbms_output.put_line(b3);
dbms_output.put_line(b4);
dbms_output.put_line(b5);
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end loop;
end;
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varchar2) as
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name from user_dependencies
where referenced_name=upper(nam) and referenced_type=upper(typ);
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Amit

I believe System refresh only means refresh of data and it has nothing to do with table structure.
Alas, you were wrong, after all table definition are data too, as program sources...
You have to re-import every transport request which was not yet transported to production in your test system.
Regards,
Raymond

Oracle Data Pump - Table Structure change

Hi,
we have daily partitioned table, and for backup we are using data pump (expdp). we policy to drop partition after backup (archiving).
we have archived dump files for 1year, few days back developer made changes with table structure they added one new column to table.
Now we are unable to restore old partitions is there a way to restore partition if new column added / dropped from currect table.
Thanks
Sachin

If a new column has been added to the table, you can import only the the data from the old structure to the new structure. Use the parameter CONTENT=DATA_ONLY.

Importing table structure only consumes space in GB

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