Sådan importeres oracle-dump fra ec2-instans til RDS i AWS

Jeg er enig i, at det officielle dokument er ret forvirrende og uklart, når det kommer til Oracle-import af dumpfil.

Der er et andet dokument trin for trin instruktioner fra amazon på http://d0.awsstatic.com/whitepapers/strategies-for-migrating-oracle-database-to-aws.pdf og også en præsentation på http://fr.slideshare.net/AmazonWebServices/dat308-28616289

Grundlæggende er processen:

du skal overføre filer til Amazon RDS DB-instans - Amazon tilbyder en allerede defineret DATA_PUMP_DIR så du skal have et script for at flytte dine dumpfiler fra din EC2-instans til Amazon RDS DATA_PUMP_DIR

Følgende script ville gøre jobbet for dig

use DBI;
use warnings;
use strict;

# RDS instance info
my $RDS_PORT=1521;
my $RDS_HOST="<my rds instance>";
my $RDS_LOGIN="<myuser>/*******";
my $RDS_SID="<ORCL_LIKE>"; 

#The $ARGV[0] is a parameter you pass into the script
my $dirname = "DATA_PUMP_DIR";
my $fname = $ARGV[0];

my $data = "dummy";
my $chunk = 8192;

my $sql_open = "BEGIN perl_global.fh := utl_file.fopen(:dirname, :fname, 'wb', :chunk); END;";
my $sql_write = "BEGIN utl_file.put_raw(perl_global.fh, :data, true); END;";
my $sql_close = "BEGIN utl_file.fclose(perl_global.fh); END;";
my $sql_global = "create or replace package perl_global as fh utl_file.file_type; end;";

my $conn = DBI->connect('dbi:Oracle:host='.$RDS_HOST.';sid='.$RDS_SID.';port='.$RDS_PORT,$RDS_LOGIN, '') || die ( $DBI::errstr . "\n");

my $updated=$conn->do($sql_global);
my $stmt = $conn->prepare ($sql_open);
$stmt->bind_param_inout(":dirname", \$dirname, 12);
$stmt->bind_param_inout(":fname", \$fname, 12);
$stmt->bind_param_inout(":chunk", \$chunk, 4);
$stmt->execute() || die ( $DBI::errstr . "\n");

open (INF, $fname) || die "\nCan't open $fname for reading: $!\n";
binmode(INF);
$stmt = $conn->prepare ($sql_write);
my %attrib = ('ora_type','24');
my $val=1;
while ($val> 0) {
  $val = read (INF, $data, $chunk);
  $stmt->bind_param(":data", $data , \%attrib);
  $stmt->execute() || die ( $DBI::errstr . "\n") ; };
die "Problem copying: $!\n" if $!;
close INF || die "Can't close $fname: $!\n";
  $stmt = $conn->prepare ($sql_close);
$stmt->execute() || die ( $DBI::errstr . "\n") ;

sørg for, at alle dine filer er importeret

select * from table(RDSADMIN.RDS_FILE_UTIL.LISTDIR('DATA_PUMP_DIR')) order by FILENAME;

Importer dine data fra dumpfiler til din RDS-instans

du kan køre impdp eller du kan indsende et job ved hjælp af PL/SQL-script

declare
  h1    NUMBER;
begin

  h1 := dbms_datapump.open (operation => 'IMPORT', job_mode => 'FULL', job_name => 'IMPORT_DUMP', version => 'COMPATIBLE');
  dbms_datapump.add_file(handle => h1, filename => 'IMPORT.LOG', directory => 'DATA_PUMP_DIR', filetype => DBMS_DATAPUMP.KU$_FILE_TYPE_LOG_FILE);

  -- optional 
  dbms_datapump.set_parallel(handle => h1, degree => 8);

  dbms_datapump.add_file(handle => h1, filename => 'IMPORT.LOG', directory => 'DATA_PUMP_DIR', filetype => 3);
  dbms_datapump.set_parameter(handle => h1, name => 'KEEP_MASTER', value => 0);

  dbms_datapump.add_file(handle => h1, filename => 'HOST_01.dmp', directory => 'DATA_PUMP_DIR', filetype => DBMS_DATAPUMP.KU$_FILE_TYPE_DUMP_FILE);
  <repeat the add_file for all your files>

  dbms_datapump.set_parameter(handle => h1, name => 'INCLUDE_METADATA', value => 1);
  dbms_datapump.set_parameter(handle => h1, name => 'DATA_ACCESS_METHOD', value => 'AUTOMATIC');
  dbms_datapump.set_parameter(handle => h1, name => 'REUSE_DATAFILES', value => 0);
  dbms_datapump.set_parameter(handle => h1, name => 'SKIP_UNSUSABLE_INDEXES', value => 0);

  dbms_datapump.start_job(handle => h1, skip_current => 0, abort_step => 0);
  dbms_datapump.detach(handle => h1);
end;
/

Importen er udført og data tilgængelige i din RDS db. du kan rense dine filer fra DATA_PUMP_DIR , ville følgende script gøre jobbet

-- remove file from data pump dir
begin
utl_file.fremove ('DATA_PUMP_DIR','import.log');
utl_file.fremove ('DATA_PUMP_DIR','<name of file>.dmp');
end fremove;
/