Tag: Database

# Variable definitions.
wallet_dir="/etc/ORACLE/WALLETS/$ORACLE_SID"
walletpw=""
dp_dir="/data/backup/tblspace_export_pre_TDE/$ORACLE_SID" # Datapump export/import dir.

# Check required variables.
if [ -z "$ORACLE_SID" -o `grep -c "^$ORACLE_SID:" /etc/oratab` -ne 1 ] ; then
   echo "ERROR: Invalid ORACLE_SID."
   exit 1;
fi

if [ -z "$ORACLE_HOME" ] ; then
   export ORACLE_HOME = "`awk '/'$ORACLE_SID'/ { split($0,a,":"); print a[2] }' /etc/oratab`"

   if [ -z "$ORACLE_HOME" ] ; then
      echo "ERROR: Failed to set ORACLE_HOME."
      exit 1;
   fi
fi

# Show setup.
echo "------------------------------------------"
echo "Starting TDE setup script."
date
echo "The following has been defined:"
echo " ORACLE_SID : $ORACLE_SID"
echo " ORACLE_HOME : $ORACLE_HOME"
echo " WALLET DIR : $wallet_dir"
echo " DATAPUMP DIR: $dp_dir"
echo "------------------------------------------"
echo " "

# Check if DB already has wallet/encryption.
retval="`sqlplus -s "/ as sysdba" <<EOF
set head off
set newpage none
set feedback off
set trimout on
set tab on
select DECODE(count(status),0,'NONE','SOME') from v\$wallet;
EOF`"

if [ "$retval" != "NONE" ] ; then
   echo "ERROR: Encryption may already be enabled on this database."
   exit 1;
 else
   echo "Encryption is not already enabled on this database."
fi

# Check sqlnet.ora file.
if [ "`grep -c '^ENCRYPTION_WALLET_LOCATION' $ORACLE_HOME/network/admin/sqlnet.ora`" -ne 1 ] ; then
   echo "Adding ENCRYPTION_WALLET_LOCATION to sqlnet.ora in $ORACLE_HOME/network/admin/sqlnet.ora"
   cat <<EOF >>$ORACLE_HOME/network/admin/sqlnet.ora
# Added WALLET location for TDE see 1228046.1.
ENCRYPTION_WALLET_LOCATION =
(SOURCE = (METHOD = FILE)
(METHOD_DATA =
(DIRECTORY = ${wallet_dir}/)))
EOF

   if [ $? -ne 0 ] ; then
      echo "ERROR: Failed to update sqlnet.ora."
      exit 1;
   fi
 else
   echo "Section ENCRYPTION_WALLET_LOCATION already exists in sqlnet.ora"
fi

# Get list of unencrypted non-system tablespaces
list_tblspace="`sqlplus -s "/ as sysdba" <<EOF
ttitle off
btitle off
set newpage none
set feedback off
set head off
set wrap off
set trim on
set tab on
set linesize 30
set pagesize 1000
-- select rpad(UPPER(t.name),30)
-- from v$tablespace t
-- where t.name not in ('SYSTEM','SYSAUX','UNDO','TEMP')
-- and t.ts# not in (select ts# from v$encrypted_tablespaces);
select rpad('USERS_TDE',30) from dual;
EOF`"

# Confirm tablespaces.
echo " "
echo "The following non-system unencrypted tablespaces have been found:"
echo "$list_tblspace"
echo -n "Setup these for TDE? {Y|N} : "
read reply

if [ "$reply" != "Y" -a "$reply" != "y" ] ; then
   exit 1;
fi

# Check dbdump oracle directory doesnt exist.
retval="`sqlplus -s "/ as sysdba"<<EOF
set head off
set newpage none
set feedback off
set trimout on
set tab on
select trim(directory_path) from dba_directories
where directory_name='DPDUMP_BACKUP';
EOF`"

if [ -n "$retval" ] ; then
   echo "WARNING: Oracle directory DPDUMP_BACKUP already exists."
   echo "It is assigned to path: $retval"
   echo "OK to recreate it to $dp_dir"
   echo -n "Enter {Y|N} : "
   read reply
   if [ "$reply" != "Y" -a "$reply" != "y" ] ; then
      exit 1;
   fi
fi

# Create the datapump export/import dir in oracle.
sqlplus -s "/ as sysdba" <<EOF
create or replace directory dpdump_backup as '$dp_dir';
EOF

echo "------------------------------------------"
echo "Exporting tablespaces and generating DDL."

# Export the tablespaces to the backup directory location and generate DDL.
echo "$list_tblspace" | while read tablespace
do
   expdp userid="'/ as sysdba'" dumpfile=$tablespace.dmp directory=dpdump_backup logfile=${tablespace}_exp.log tablespaces="$tablespace"

   # Generate the tablespace creation DDL to the backup directory location.
   sqlplus -s "/ as sysdba" << EOF
SET LONG 10000
set head off
set newpage none
set trimspool on
spool $dp_dir/cre_$tablespace.sql
SELECT dbms_metadata.get_ddl('TABLESPACE','$tablespace') FROM DUAL;
SPOOL OFF
EOF

   # Adjust the DDL file to include the ENCRYPTION string.
   cat $dp_dir/cre_$tablespace.sql | grep -e '^.*[A-Z0-9]' > $dp_dir/cre_TDE_$tablespace.sql

########### ENABLE ENCRYPTION FROM HERE ON IN ################################

while [ -z "$walletpw" ] ; do
   echo -n "Enter the wallet encryption key to use: "
   read walletpw
   echo -n " Re-enter the wallet encryption key: "
   read reply
   if [ "$walletpw" != "$reply" ] ; then
      echo "WARNING: Typed keys do not match."
      echo -n "Try again? {Y|N} : "
      read reply
      if [ "$reply" != "Y" -a "$reply" != "y" ] ; then
         exit 1;
      fi
      walletpw=""
   fi

done

# Alter the DB to enable encryption.
sqlplus "/ as sysdba" << EOF
alter system set encryption key identified by "$walletpw";
EOF

if [ $? -ne 0 ] ; then
   echo "WARNING: Enabling encryption may have failed in the DB."
   exit 1;
fi

# Change permissions on all files in the wallet dir.
chmod 600 "$wallet_dir/*"

# Offline and then drop the tablespace and datafiles.
# WARNING: You should have a backup at this point.
echo "WARNING: About to offline and drop tablespaces:"
echo "$list_tblspace"
echo "##################################################"
echo "You should check the expdp export logs in $dp_dir."
echo "##################################################"

echo -n "Continue? [Y|N]: "
read reply
if [ "$reply" != "Y" -a "$reply" != "y" ]; then
   echo "Cancelling."
   exit 1
fi

# Offline and drop each tablespace (including datafiles) then re-create and import export dump file.
echo "$list_tblspace" | while read tablespace
do
   sqlplus "/ as sysdba" << EOF
alter tablespace $tablespace offline;
drop tablespace $tablespace including contents and datafiles;
@$dp_dir/cre_TDE_$tablespace.sql
-- @$dp_dir/cre_$tablespace.sql <<-- Recreates original non-TDE tablespace.
/
EOF

   impdp userid="'/ as sysdba'" dumpfile=$tablespace.dmp directory=dpdump_backup logfile=${tablespace}_imp.log tablespaces="$tablespace"

done