Oracle Database 12c: Duplicate em modo ativo com RMAN (Parte VI)

Caso 5: Duplicando database ativo com método Pull-Based de apenas um Pluggable Database

Por Joel Perez , Mahir M. Quluzade (OCE) & Flávio Soares (OCE)
Postado em Março 2015

Revisado por Marcelo Pirovar - Solution Architect

Índice do artigos:

 

Vamos ver o quinto exemplo para a duplicar o bancos de dados com o RMAN em modo ativo.

Antes de ler este artigo, aconselhamos a ler (parte I) desta série de artigos para que você possa ter certeza sobre a teoria relacionada com esta série de artigos. Se você preparou seu hosts de destino como mostra os 7 passos (na parte I), então você pode duplicar banco de dados usando o RMAN.

Caso 5: Duplicando PDBs - Duplicando database ativo com método Pull-Based de apenas um Pluggable Database
No exemplo a seguir, estamos trabalhando inicialmente no CDB chamado "prmcdb" como fonte de dados a ser duplicado para o CDB "dupcdb", como está na terceira parte dessa série de artigos. Usamos o comando duplicate do RMAN com as seguintes opções:


Opção do Duplicate

Pluggable Database – prmpdb01

Tipo do Duplicate

Active Database Duplication

Método do Duplicate

Pull-Based

Usando o tipo de backup

BACKUPSETS   (padrão)

Números de Target Channels

1   (padrão)

Números de Auxiliary Channels

1  (padrão)


O comando duplicate do RMAN nesse caso é apresentado abaixo:  

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';

Descrição do código:  
Como se vê no código acima, o RMAN irá duplicar o pluggable database prmpdb01 (você pode verificar a estrutura do banco de dados fonte na Parte I desta série de artigos), os target e auxiliary channels não são alocados de forma explícita. O RMAN aloca apenas um target e um default auxiliary channel (ORA_ DISK_1 and ORA_AUX_DISK_1). O número de target e auxiliary channels são os mesmos. Isso significa que nesse caso o RMAN utilizará o método Pull-Based para o duplicate. O RMAN Duplicate especificada a delimitada lista de PDBs separado por vírgulas, exceto para PDBs não especificados. Utilizamos também o parâmetros parameter_value_convert e o db{log}_file_name_convert no comando duplicate. O uso desses parâmetros estão explicados na primeira parte (parte I) desta série de artigos.

No output podemos ver um processo normal de duplicate, como sempre foi nas versões anteriores.

Vamos ver este código em ação: 

[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 se vê a partir desse output, RMAN pula um PDB (prmpdb02). Podemos então, verificar o Pluggable Database no duplicado banco de dados.

[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

Esperamos que este artigo tenha sido útil para você. Convidamos a ler a próxima parte desta série de artigos:

Caso 6: Duplicando PDBs - Duplicando database ativo com método Pull-Based de dois Pluggable Databases

Joel Pérez é um DBA Especialista (Oracle ACE Director, OCM Cloud Admin. & OCM11g ). Com mais de 14 anos de experiência do mundo Oracle Technology, especializado em arquitetura e implementação de soluções como: Cloud, Alta disponibilidade, Disaster/Recovery, Upgrades, replicação e todos as áreas relacionadas com bancos de dados Oracle. Consultor internacional com deveres, conferências e atividades em mais de 50 países e inúmeros clientes em todo o mundo. Palestrante regular nos eventos Oracle em todo o mundo como: OTN LAD, OTN MENA, OTN APAC e muito mais. Joel sempre foi conhecido por ser pioneiro em tecnologia Oracle desde os primeiros dias de sua carreira sendo o primeiro latino-americano premiado como "OTN Expert" no ano de 2003 pela Oracle Corporation, um dos primeiros "ACE Oracle" no Oracle ACE Program no ano de 2004, um dos primeiros OCP Database Cloud Administrator em todo o mundo no ano de 2013 e como um das maiores realizações profissionais em sua carreira, recentemente ele foi homenageado como o primeiro "OCM Database Cloud Administrator" do mundo.

Mahir M. Quluzade é um DBA Sênior com mais de 10 anos de experiência em banco de dados Oracle com foco principal na alta disponibilidade e soluções de recuperação de desastres (RAC, Data Guard, RMAN, ...). Mahir está atualmente trabalhando no Banco Central da República do Azerbaijão. Ele é um DBA OCP. Mahir é membro fundador do Azerbaijão a Oracle User Group (AZEROUG); também é um blogger. Siga Mahir em seu blog.

Flávio Soares é um Oracle DBA Sênior, Exadata DMA, Troubleshooter e Consultor Oracle, certificado em OCP/OCE RAC. Especialista em Exadata, alta disponibilidade e replicação de dados com soluções Oracle. Flávio disponibiliza frequentes informações para a comunidade Oracle através do seu blog.

Este artigo foi revisto pela equipe de produtos Oracle e está em conformidade com as normas e práticas para o uso de produtos Oracle.