Oracle Database 12c: Active Duplication con RMAN (Caso 5)

Por Joel Perez , Mahir M. Quluzade (OCE) & Sebastián D'Alessandro (OCE)
Publicado en Mayo 2015

Índice:

Veamos el quinto ejemplo para duplicar una base de datos con RMAN en modo activo.

Antes de continuar con la lectura le aconsejamos leer la (parte I) de esta serie para que pueda estar seguro de comprender la teoría relacionada con estos artículos. Si preparó su host destino como se indica en los 7 pasos descritos en la (parte 1), entonces podrá duplicar la base de datos utilizando RMAN.

Caso 5: Duplicando PDBs – “Pull-Based Active Database Duplication” de una sola "Pluggable Database"

En el siguiente ejemplo estamos trabajando inicialmente como base de datos origen con la CDB llamada “prmcdb”  que será duplicada en la CDB llamada “dupcdb” como ocurre en otras partes de esta serie de artículos. En este caso usamos el comando DUPLICATE de RMAN con las siguientes opciones:

Opción de duplicación

Pluggable Database – prmpdb01

Tipo de duplicación

Active Database Duplication

Método de duplicación

Pull-Based

Tipo de backup utilizado

BACKUPSETS   (default)

Número de “Target Channels”

1   (default)

Número de “Auxiliary Channels”

1  (default)


A continuación se muestra el comando DUPLICATE de RMAN para este caso:

duplicate database to dupcdb pluggable database prmpdb01 
  from active database 
   spfile 
     parameter_value_convert='prmcdb','dupcdb' 
     set db_file_name_convert='prmcdb','dupcdb'
     set log_file_name_convert='prmcdb','dupcdb';


Descripción del código:
Como puede verse en el código de arriba, RMAN duplicará la “pluggable database” prmpdb01(se puede verificar la estructura de la base de datos origen en la parte I de esta serie de artículos), los canales “target” y “auxiliary”  no son asignados de manera explícita. RMAN asigna solamente un “channel”  default para “target”  y  otro para “auxiliary”   (ORA_ DISK_1 and ORA_AUX_DISK_1).  La cantidad de “target” y “auxiliary channels”  es la misma, esto significa que en este caso RMAN utilizara el método “Pull-Based” para la duplicación. RMAN duplicará las PDBs indicadas en la lista delimitada con comas, exceptuando cualquier otra PDB que no sea especificada . También utilizamos para este caso los parámetros  parameter_value_convert  y  db{log}_file_name_convert en el comando duplicate. El uso de estos parámetros está explicado en la primera parte (parte 1) de esta serie de artículos.

En la salida podemos observar un procedimiento normal de duplicación  como siempre  fue  en versiones anteriores.

Veamos este código en acción: 

[oracle@oel62-ora12c-prm ~]$ rman 
 
Recovery Manager: Release 12.1.0.1.0 - Production on Wed Apr 9 10:41:11 2014
 
Copyright (c) 1982, 2013, Oracle and/or its affiliates.  All rights reserved.
 
RMAN> connect target sys/*****@prmcdb
 
connected to target database: PRMCDB (DBID=2508276746)
 
RMAN> connect auxiliary sys/*****@dupcdb
 
connected to auxiliary database: DUPCDB (not mounted)
 
 
RMAN> duplicate database to dupcdb pluggable database prmpdb01 
2>  from active database 
3>  spfile 
4>   parameter_value_convert='prmcdb','dupcdb' 
5>   set db_file_name_convert='prmcdb','dupcdb'
6>   set log_file_name_convert='prmcdb','dupcdb';
 
Starting Duplicate Db at 09-APR-14
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=21 device type=DISK
current log archived
 
contents of Memory Script:
{
   restore clone from service  'prmcdb' spfile to 
 '/u01/app/oracle/product/12.1.0/dbhome/dbs/spfiledupcdb.ora';
   sql clone "alter system set spfile= ''/u01/app/oracle/product/12.1.0/dbhome/dbs/spfiledupcdb.ora''";
}
executing Memory Script
 
Starting restore at 09-APR-14
using channel ORA_AUX_DISK_1
 
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: restoring SPFILE
output file name=/u01/app/oracle/product/12.1.0/dbhome/dbs/spfiledupcdb.ora
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
Finished restore at 09-APR-14
 
sql statement: alter system set spfile= ''/u01/app/oracle/product/12.1.0/dbhome/dbs/spfiledupcdb.ora''
 
contents of Memory Script:
{
   sql clone "alter system set  db_name = 
 ''DUPCDB'' comment=
 ''duplicate'' scope=spfile";
   sql clone "alter system set  audit_file_dest = 
 ''/u01/app/oracle/admin/dupcdb/adump'' comment=
 '''' scope=spfile";
   sql clone "alter system set  control_files = 
 ''/u01/app/oracle/oradata/dupcdb/control01.ctl'', ''/u01/app/oracle/fra/dupcdb/control02.ctl'' comment=
 '''' scope=spfile";
   sql clone "alter system set  dispatchers = 
 ''(PROTOCOL=TCP) (SERVICE=dupcdbXDB)'' comment=
 '''' scope=spfile";
   sql clone "alter system set  db_file_name_convert = 
 ''prmcdb'', ''dupcdb'' comment=
 '''' scope=spfile";
   sql clone "alter system set  log_file_name_convert = 
 ''prmcdb'', ''dupcdb'' comment=
 '''' scope=spfile";
   shutdown clone immediate;
   startup clone nomount;
}
executing Memory Script
 
sql statement: alter system set  db_name =  ''DUPCDB'' comment= ''duplicate'' scope=spfile
 
sql statement: alter system set  audit_file_dest =  
''/u01/app/oracle/admin/dupcdb/adump'' comment= '''' scope=spfile
 
sql statement: alter system set  control_files =  ''/u01/app/oracle/oradata/dupcdb/control01.ctl'', 
''/u01/app/oracle/fra/dupcdb/control02.ctl'' comment= '''' scope=spfile
 
sql statement: alter system set  dispatchers =  ''(PROTOCOL=TCP) (SERVICE=dupcdbXDB)'' comment= '''' scope=spfile
 
sql statement: alter system set  db_file_name_convert =  ''prmcdb'', ''dupcdb'' comment= '''' scope=spfile
 
sql statement: alter system set  log_file_name_convert =  ''prmcdb'', ''dupcdb'' comment= '''' scope=spfile
 
Oracle instance shut down
 
connected to auxiliary database (not started)
Oracle instance started
 
Total System Global Area    1219260416 bytes
 
Fixed Size                     2287768 bytes
Variable Size                838862696 bytes
Database Buffers             369098752 bytes
Redo Buffers                   9011200 bytes
 
contents of Memory Script:
{
   sql clone "alter system set  db_name = 
 ''PRMCDB'' comment=
 ''Modified by RMAN duplicate'' scope=spfile";
   sql clone "alter system set  db_unique_name = 
 ''DUPCDB'' comment=
 ''Modified by RMAN duplicate'' scope=spfile";
   shutdown clone immediate;
   startup clone force nomount
   restore clone from service  'prmcdb' primary controlfile;
   alter clone database mount;
}
executing Memory Script
 
sql statement: alter system set  db_name =  ''PRMCDB'' comment= ''Modified by RMAN duplicate'' scope=spfile
 
sql statement: alter system set  db_unique_name =  ''DUPCDB'' comment= ''Modified by RMAN duplicate'' scope=spfile
 
Oracle instance shut down
 
Oracle instance started
 
Total System Global Area    1219260416 bytes
 
Fixed Size                     2287768 bytes
Variable Size                838862696 bytes
Database Buffers             369098752 bytes
Redo Buffers                   9011200 bytes
 
Starting restore at 09-APR-14
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=19 device type=DISK
 
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:07
output file name=/u01/app/oracle/oradata/dupcdb/control01.ctl
output file name=/u01/app/oracle/fra/dupcdb/control02.ctl
Finished restore at 09-APR-14
 
database mounted
Skipping pluggable database PRMPDB02
Automatically adding tablespace SYSTEM
Automatically adding tablespace SYSAUX
Automatically adding tablespace PDB$SEED:SYSTEM
Automatically adding tablespace PDB$SEED:SYSAUX
Automatically adding tablespace UNDOTBS1
Skipping tablespace USERS
 
contents of Memory Script:
{
   set newname for datafile  1 to 
 "/u01/app/oracle/oradata/dupcdb/system01.dbf";
   set newname for datafile  3 to 
 "/u01/app/oracle/oradata/dupcdb/sysaux01.dbf";
   set newname for datafile  4 to 
 "/u01/app/oracle/oradata/dupcdb/undotbs01.dbf";
   set newname for datafile  5 to 
 "/u01/app/oracle/oradata/dupcdb/pdbseed/system01.dbf";
   set newname for datafile  7 to 
 "/u01/app/oracle/oradata/dupcdb/pdbseed/sysaux01.dbf";
   set newname for datafile  8 to 
 "/u01/app/oracle/oradata/dupcdb/prmpdb01/system01.dbf";
   set newname for datafile  9 to 
 "/u01/app/oracle/oradata/dupcdb/prmpdb01/sysaux01.dbf";
   set newname for datafile  10 to 
 "/u01/app/oracle/oradata/dupcdb/prmpdb01/prmpdb01_users01.dbf";
   restore
   from service  'prmcdb'   clone database
   skip forever tablespace  "USERS",
 "PRMPDB02":"USERS",
 "PRMPDB02":"SYSTEM",
 "PRMPDB02":"SYSAUX"   ;
   sql 'alter system archive log current';
}
executing Memory Script
 
executing command: SET NEWNAME
 
executing command: SET NEWNAME
 
executing command: SET NEWNAME
 
executing command: SET NEWNAME
 
executing command: SET NEWNAME
 
executing command: SET NEWNAME
 
executing command: SET NEWNAME
 
executing command: SET NEWNAME
 
Starting restore at 09-APR-14
using channel ORA_AUX_DISK_1
 
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00001 to /u01/app/oracle/oradata/dupcdb/system01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:01:25
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00003 to /u01/app/oracle/oradata/dupcdb/sysaux01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:01:25
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00004 to /u01/app/oracle/oradata/dupcdb/undotbs01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:15
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00005 to /u01/app/oracle/oradata/dupcdb/pdbseed/system01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:35
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00007 to /u01/app/oracle/oradata/dupcdb/pdbseed/sysaux01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:01:15
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00008 to /u01/app/oracle/oradata/dupcdb/prmpdb01/system01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:35
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00009 to /u01/app/oracle/oradata/dupcdb/prmpdb01/sysaux01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:01:15
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00010 to /u01/app/oracle/oradata/dupcdb/prmpdb01/prmpdb01_users01.dbf
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
Finished restore at 09-APR-14
 
sql statement: alter system archive log current
current log archived
 
contents of Memory Script:
{
   restore clone force from service  'prmcdb' 
           archivelog from scn  2040776;
   switch clone datafile all;
}
executing Memory Script
 
Starting restore at 09-APR-14
using channel ORA_AUX_DISK_1
 
channel ORA_AUX_DISK_1: starting archived log restore to default destination
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=78
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
channel ORA_AUX_DISK_1: starting archived log restore to default destination
channel ORA_AUX_DISK_1: using network backup set from service prmcdb
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=79
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
Finished restore at 09-APR-14
 
datafile 1 switched to datafile copy
input datafile copy RECID=11 STAMP=844426141 file name=/u01/app/oracle/oradata/dupcdb/system01.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=12 STAMP=844426142 file name=/u01/app/oracle/oradata/dupcdb/sysaux01.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=13 STAMP=844426142 file name=/u01/app/oracle/oradata/dupcdb/undotbs01.dbf
datafile 5 switched to datafile copy
input datafile copy RECID=14 STAMP=844426142 file name=/u01/app/oracle/oradata/dupcdb/pdbseed/system01.dbf
datafile 7 switched to datafile copy
input datafile copy RECID=15 STAMP=844426143 file name=/u01/app/oracle/oradata/dupcdb/pdbseed/sysaux01.dbf
datafile 8 switched to datafile copy
input datafile copy RECID=16 STAMP=844426143 file name=/u01/app/oracle/oradata/dupcdb/prmpdb01/system01.dbf
datafile 9 switched to datafile copy
input datafile copy RECID=17 STAMP=844426143 file name=/u01/app/oracle/oradata/dupcdb/prmpdb01/sysaux01.dbf
datafile 10 switched to datafile copy
input datafile copy RECID=18 STAMP=844426144 file name=/u01/app/oracle/oradata/dupcdb/prmpdb01/prmpdb01_users01.dbf
 
contents of Memory Script:
{
   set until scn  2041207;
   recover
   clone database
   skip forever tablespace  "USERS",
 "PRMPDB02":"USERS",
 "PRMPDB02":"SYSTEM",
 "PRMPDB02":"SYSAUX"    delete archivelog
   ;
}
executing Memory Script
 
executing command: SET until clause
 
Starting recover at 09-APR-14
using channel ORA_AUX_DISK_1
 
Executing: alter database datafile 6 offline drop
Executing: alter database datafile 30 offline drop
Executing: alter database datafile 28 offline drop
Executing: alter database datafile 29 offline drop
starting media recovery
 
archived log for thread 1 with sequence 78 is already on disk as file 
/u01/app/oracle/fra/DUPCDB/archivelog/2014_04_09/o1_mf_1_78_9n9qtc4o_.arc
archived log for thread 1 with sequence 79 is already on disk as file 
/u01/app/oracle/fra/DUPCDB/archivelog/2014_04_09/o1_mf_1_79_9n9qtd8l_.arc
archived log file name=/u01/app/oracle/fra/DUPCDB/archivelog/2014_04_09/o1_mf_1_78_9n9qtc4o_.arc thread=1 sequence=78
archived log file name=/u01/app/oracle/fra/DUPCDB/archivelog/2014_04_09/o1_mf_1_79_9n9qtd8l_.arc thread=1 sequence=79
media recovery complete, elapsed time: 00:00:05
Finished recover at 09-APR-14
Oracle instance started
 
Total System Global Area    1219260416 bytes
 
Fixed Size                     2287768 bytes
Variable Size                838862696 bytes
Database Buffers             369098752 bytes
Redo Buffers                   9011200 bytes
 
contents of Memory Script:
{
   sql clone "alter system set  db_name = 
 ''DUPCDB'' comment=
 ''Reset to original value by RMAN'' scope=spfile";
   sql clone "alter system reset  db_unique_name scope=spfile";
}
executing Memory Script
 
sql statement: alter system set  db_name =  ''DUPCDB'' comment= ''Reset to original value by RMAN'' scope=spfile
 
sql statement: alter system reset  db_unique_name scope=spfile
Oracle instance started
 
Total System Global Area    1219260416 bytes
 
Fixed Size                     2287768 bytes
Variable Size                838862696 bytes
Database Buffers             369098752 bytes
Redo Buffers                   9011200 bytes
sql statement: CREATE CONTROLFILE REUSE SET DATABASE "DUPCDB" RESETLOGS ARCHIVELOG 
  MAXLOGFILES     16
  MAXLOGMEMBERS      3
  MAXDATAFILES     1024
  MAXINSTANCES     8
  MAXLOGHISTORY      292
 LOGFILE
  GROUP   1 ( '/u01/app/oracle/oradata/dupcdb/redo01.log' ) SIZE 50 M  REUSE,
  GROUP   2 ( '/u01/app/oracle/oradata/dupcdb/redo02.log' ) SIZE 50 M  REUSE,
  GROUP   3 ( '/u01/app/oracle/oradata/dupcdb/redo03.log' ) SIZE 50 M  REUSE
 DATAFILE
  '/u01/app/oracle/oradata/dupcdb/system01.dbf',
  '/u01/app/oracle/oradata/dupcdb/pdbseed/system01.dbf',
  '/u01/app/oracle/oradata/dupcdb/prmpdb01/system01.dbf'
 CHARACTER SET AL32UTF8
 
 
contents of Memory Script:
{
   set newname for tempfile  1 to 
 "/u01/app/oracle/oradata/dupcdb/temp01.dbf";
   set newname for tempfile  2 to 
 "/u01/app/oracle/oradata/dupcdb/pdbseed/pdbseed_temp01.dbf";
   set newname for tempfile  3 to 
 "/u01/app/oracle/oradata/dupcdb/prmpdb01/temp01.dbf";
   switch clone tempfile all;
   catalog clone datafilecopy  "/u01/app/oracle/oradata/dupcdb/sysaux01.dbf", 
 "/u01/app/oracle/oradata/dupcdb/undotbs01.dbf", 
 "/u01/app/oracle/oradata/dupcdb/pdbseed/sysaux01.dbf", 
 "/u01/app/oracle/oradata/dupcdb/prmpdb01/sysaux01.dbf", 
 "/u01/app/oracle/oradata/dupcdb/prmpdb01/prmpdb01_users01.dbf";
   switch clone datafile all;
}
executing Memory Script
 
executing command: SET NEWNAME
 
executing command: SET NEWNAME
 
executing command: SET NEWNAME
 
renamed tempfile 1 to /u01/app/oracle/oradata/dupcdb/temp01.dbf in control file
renamed tempfile 2 to /u01/app/oracle/oradata/dupcdb/pdbseed/pdbseed_temp01.dbf in control file
renamed tempfile 3 to /u01/app/oracle/oradata/dupcdb/prmpdb01/temp01.dbf in control file
 
cataloged datafile copy
datafile copy file name=/u01/app/oracle/oradata/dupcdb/sysaux01.dbf RECID=1 STAMP=844426175
cataloged datafile copy
datafile copy file name=/u01/app/oracle/oradata/dupcdb/undotbs01.dbf RECID=2 STAMP=844426176
cataloged datafile copy
datafile copy file name=/u01/app/oracle/oradata/dupcdb/pdbseed/sysaux01.dbf RECID=3 STAMP=844426176
cataloged datafile copy
datafile copy file name=/u01/app/oracle/oradata/dupcdb/prmpdb01/sysaux01.dbf RECID=4 STAMP=844426176
cataloged datafile copy
datafile copy file name=/u01/app/oracle/oradata/dupcdb/prmpdb01/prmpdb01_users01.dbf RECID=5 STAMP=844426176
 
datafile 3 switched to datafile copy
input datafile copy RECID=1 STAMP=844426175 file name=/u01/app/oracle/oradata/dupcdb/sysaux01.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=2 STAMP=844426176 file name=/u01/app/oracle/oradata/dupcdb/undotbs01.dbf
datafile 7 switched to datafile copy
input datafile copy RECID=3 STAMP=844426176 file name=/u01/app/oracle/oradata/dupcdb/pdbseed/sysaux01.dbf
datafile 9 switched to datafile copy
input datafile copy RECID=4 STAMP=844426176 file name=/u01/app/oracle/oradata/dupcdb/prmpdb01/sysaux01.dbf
datafile 10 switched to datafile copy
input datafile copy RECID=5 STAMP=844426176 file name=/u01/app/oracle/oradata/dupcdb/prmpdb01/prmpdb01_users01.dbf
 
contents of Memory Script:
{
   Alter clone database open resetlogs;
}
executing Memory Script
 
database opened
Executing: drop pluggable database "PRMPDB02"
 
contents of Memory Script:
{
   sql clone "alter pluggable database all open";
}
executing Memory Script
 
sql statement: alter pluggable database all open
Dropping offline and skipped tablespaces
Executing: alter database default tablespace system
Executing: drop tablespace "USERS" including contents cascade constraints
Finished Duplicate Db at 09-APR-14
 
Recovery Manager complete.
 

Como podemos apreciar  en esta salida, RMAN omitió la otra PDB (prmpdb02). Podemos verificar esto consultando las  “Pluggable Database” en la base duplicada.

[oracle@oel62-ora12c-dup ~]$ export $ORACLE_SID=dupcdb
[oracle@oel62-ora12c-dup ~]$ sqlplus / as  sysdba
 
SQL*Plus: Release 12.1.0.1.0 Production on Wed Apr 9 11:41:04 2014
 
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
 
 
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
 
SQL> select con_id, open_mode, name from v$pdbs;
 
 CON_ID OPEN_MODE  NAME
------- ---------- -------------------
      2 READ ONLY  PDB$SEED
      3 READ WRITE PRMPDB01

 

Joel Pérez es un experto DBA (Oracle ACE Director, OCM Cloud Admin. & OCM11g) con más de 15 años de experiencia real en el mundo de tecnología Oracle, especializado en diseño e implementación de soluciones de: Cloud, Alta disponibilidad, Recuperación contra desastres, Upgrades, Replicación y toda área relacionada con bases de datos Oracle. Consultor Internacional con trabajos, conferencias y actividades relacionadas en más de 50 países alrededor del mundo. Habitual Orador en eventos Oracle alrededor del mundo como: OTN LAD, OTN MENA, OTN APAC y más. Joel se ha caracterizado siempre por ser un pionero en materia de tecnología Oracle desde los inicios de su carrera siendo el primer latinoamericano en ser nombrado "OTN Expert" en el año 2003, uno de los primeros Oracle ACE en el programa ACE en el año 2004, unos de los primeros OCP Cloud en el mercado global en el año 2013 y como uno de los mayores logros de su carrera, recientemente en el 2014 fue honorificado como uno de los primeros "OCM Database Cloud Administrator" del mundo. En la actualidad Joel Pérez esta radicado en el continente de Asia con base en Beijing, China llevando a cabo operaciones profesionales como “Chief Technologist & MAA, HA Arquitect” para Yunhe Enmo (Beijing) Technology Co. Ltd.
http://education.oracle.com/education/otn/JoelPerez.htm 

Mahir M. Quluzade es un Senior DBA con mas de 10 anos de experiencia en bases de datos Oracle con especial foco en "High Availability" & "Disaster Recovery Solutions (RAC, Data Guard, RMAN,…)". Mahir actualmente trabaja en el "Central Bank of the Republic of Azerbaijan". El es OCP DBA. Mahir es frecuente orador en el "Azerbaijan Oracle User Group (AZEROUG)".

Sebastián D'Alessandro es un Senior DBA con más de 12 años de experiencia en tecnología Oracle, focalizado principalmente en seguridad de base de datos, soluciones de alta disponibilidad, disaster recovery y virtualización. Actualmente desarrolla su actividad como consultor e instructor de manera independiente.

Este artículo ha sido revisado por el equipo de productos Oracle y se encuentra en cumplimiento de las normas y prácticas para el uso de los productos Oracle.