Tag: impdp

Using EXPDP to export table data based on a filter against a different table using ku$

Using EXPDP to export table data based on a filter against a different table using ku$



Scenario –
We want to export table data based on a certain filter against a different
table ie .  We have table WC_CAMP_HIST_FX, we only want to export the data from
this table where the row_wid exists in table W_CAMP_HIST_F and data that is
only 1 years old in the W_CAMP_HIST_F table. In this situation we can use the syntax ‘ku$’ in the query filter, this is a database function so would work in cloud or on-premises.

 

Solution

 

1.      
First we will create a par file and in the query
syntax we call the parent table by using ku$.

 

$ vi
WC_CAMP_HIST_FX.par

userid="aaa/bbb"

directory=TTS_EXP

dumpfile= WC_CAMP_HIST_FX.dmp

logfile= WC_CAMP_HIST_FX.txt

tables= WC_CAMP_HIST_FX

query= WC_CAMP_HIST_FX:"where
exists (select 1 from W_CAMP_HIST_F f where ku$.row_wid = f.ROW_WID and
f.created_dt_wid >= 20161001)"

 

2.      
Execute the expdp

 

$ nohup
expdp parfile= WC_CAMP_HIST_FX.par &

 

Processing
object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS

. . exported
"SIEBEL"."WC_CAMP_HIST_FX"                  3.163 GB
23611775 rows

Master table
"SIEBEL"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded

******************************************************************************

Dump file
set for SIEBEL.SYS_EXPORT_TABLE_01 is:

 
/backup/export/WC_CAMP_HIST_FX.dmp

Job
"SIEBEL"."SYS_EXPORT_TABLE_01" successfully completed at
Tue Apr 25 13:50:51 2017 elapsed 0 00:28:09

 

EXPDP and IMPDP with Query and REMAP_TABLE

Here we have a table called requests under the SAMPLE schema, what we are going to do is export it and then re import changing its name and the tablespace with a filter.

1. Create export par file and export –

2. Create tablespace for reimport

3. Create import par file and import

Summary

We have exported and imported a table into a different tablespace, but at the same time renamed the tables using the REMAP_TABLE and REMAP_TABLESPACE parameters.