amazon web services -如何将oracle dump从ec2实例导入到AWS中的RDS

Question

我是AWS中的RDS新手。我有一个驻留在ec2 instance上的数据库转储文件。我有几个问题:

1. 如何移动转储文件到RDS Instance
2. 这样做的先决条件是什么?我的意思是我需要安装什么客户端才能做到这一点。

任何帮助或引导都是感激的。

谢谢

Answer 1

我同意官方文档在Oracle导入转储文件时相当混乱和不清楚。

有另一个文档一步一步的说明从亚马逊在http://d0.awsstatic.com/whitepapers/strategies-for-migrating-oracle-database-to-aws.pdf和演示文稿在http://fr.slideshare.net/AmazonWebServices/dat308-28616289

基本流程如下:

1. 您需要将文件传输到Amazon RDS DB实例—Amazon提供了一个已经定义的DATA_PUMP_DIR，因此您需要有一个脚本将转储文件从EC2实例移动到Amazon RDS DATA_PUMP_DIR

下面的脚本将为您完成这项工作

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") ;

确保所有的文件都导入了

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

将数据从转储文件导入到RDS实例

您可以运行impdp或使用PL/SQL脚本提交作业

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;
/

导入完成，数据可以进入RDS数据库。您可以从DATA_PUMP_DIR中清除文件，下面的脚本将执行

任务

-- 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;
/