Backup/recovery of cold one Table

I'm under 11r2 in a CCR environment. We have a primary and two standby (using Active Data Guard). Also, I'm a new s/n, bare with me. :)

TableX in a given database is damaged. The corruption began a month earlier due to change in the code of the web developer. Changing the code was set a week ago.
Summary: the data in TableX are corrupt until a week ago.

Flashback does not extend that far in the past, so what I thought to do is, on our test server:

(1) copy the relevant files of the production on the test server
(2) backup the original TableX on production
(3) to restore the system, sysaux, cancel and the tablespace that contains TableX on test server
(4) drop all other areas of storage in condition to mount (or not, if this step is not necessary?)
(5) to recover the database up to when the table was dropped or updated updated
(6) take a TableX database export and import it in production, replacing the current TableX
(7) update the imported production TableX with week last of 'good' data from the backup in step 2

I have 3 questions.
This seems like a good strategy?
In addition, I have trouble to determine what the "record" is in step 1. Which would be copied on? Everything in the ArchiveLog file? Or in the db_recovery_file_dest folder? Or...?
Finally, in step 3, is it possible to restore without overwriting pre-existing data on the test server?

Thank you

Hello;

For future use since we both use Linux

#!/bin/bash
####################################################################
#
# Data Pump Full script
#
####################################################################

if [ "$1" ]
then DBNAME=$1
else
echo "basename $0 : Syntax error : use . expdp_full.sh  "
exit 1
fi

export DMPDIR=/tmp

#
# Set the Environmental variable for the instance
#
. /u01/app/oracle/dba_tool/env/${DBNAME}.env
#
#

cd $DMPDIR

# check for existing logfile and
# remove if found.
if [ -s ${DMPDIR}/${LOGFILE} ] ; then
/bin/rm ${DMPDIR}/${LOGFILE}
fi

# check for existing dump file and
# remove if found.
if [ -s ${DMPDIR}/${DUMPFILE} ] ; then
/bin/rm ${DMPDIR}/${DUMPFILE}
fi

# change to the working directory
cd ${DMPDIR}

# call expdp and use the full path to it.
$ORACLE_HOME/bin/expdp parfile=expdp_full.par DUMPFILE=${DUMPFILE} LOGFILE=${LOGFILE} DIRECTORY=DMPDIR

# once the expdp is complete gzip it to save space.
/bin/gzip -S .`date +%m%d`.Z ${DUMPFILE}

# delete the existing dump file. Zip does not remove it.
if [ -s ${DMPDIR}/${DUMPFILE} ] ; then
/bin/rm ${DMPDIR}/${DUMPFILE}
fi

# rename the log file to preserve it.
if [ -s ${DMPDIR}/${LOGFILE} ] ; then

/bin/mv ${DMPDIR}/${LOGFILE} ${DMPDIR}/${LOGFILE}.`date +%m%d`
fi

# remove old logs and exports
# 

find ${DMPDIR}/ -name "*.Z" -mmin +1440 -exec \rm {} \;
find ${DMPDIR}/ -name "*.log*" -mmin +1440 -exec \rm {} \;

exit

expdp_full.par

USERID="/ as sysdba"
FULL=Y

Examples of Enviro (you will need more) (/ u01/app/oracle/dba_tool/env/PRIMARY.env)

export LOGFILE=PRIMARY_expdp_full.log

export DUMPFILE=PRIMARY_expdp_full.dmp

export DMPDIR=/u01/oradata/PRIMARY_export

I put the nominal file in the DMPDIR and run this daily. Then it goes to the band. Won't help but today...

mseberg

Tags: Database

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