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Oracle RAC, Data Guard, and Pluggable Databases: When MAA Meets Multitenant (#OOW14 Version)

Ludovico Caldara, profile picture
Ludovico Caldara

This document discusses integrating Oracle Real Application Clusters (RAC) and multitenant architecture with Oracle Data Guard. It explains that with RAC and multitenant, the container database itself is a RAC database, allowing pluggable databases to remain available even if an instance crashes. Services are used to control which pluggable databases are mounted and accessed on each RAC instance. While multitenant architecture provides benefits like simplified administration, it also means that in a Data Guard configuration, the entire container database must have the same role rather than individual pluggable databases.

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2013 © Trivadis BASEL BERN BRUGG LAUSANNE ZÜRICH DÜSSELDORF FRANKFURT A.M. FREIBURG I.BR. HAMBURG MÜNCHEN STUTTGART WIEN Oracle RAC, Data Guard, and Pluggable Databases: When MAA Meets Multitenant Ludovico CALDARA Oracle ACE, Senior Consultant Trivadis AG
2013 © Trivadis About Ludovico Caldara 28.09.2014 When MAA Meets Multitenant 2 ■14 Years DBA (started with 7.3.4) ▪I do it everywhere (also on Windows) ■RAC ATTACK Ninja & co-writer ■RAC SIG Board member ■OCP (11g, 12c, MySQL) & OCE ■Italian living in Switzerland ■http://www.ludovicocaldara.net ■@ludodba ■ludovicocaldara
2013 © Trivadis Trivadis is a market leader in IT consulting, system integration, solution engineering and the provision of IT services focusing on and technologies in Switzerland, Germany and Austria. We offer our services in the following strategic business fields: Trivadis Services takes over the interacting operation of your IT systems. Our company O P E R A T I O N 28.09.2014 When MAA Meets Multitenant 3
2013 © Trivadis With over 600 specialists and IT experts in your region 4 11 Trivadis branches and more than 600 employees 200 Service Level Agreements Over 4,000 training participants Research and development budget: CHF 5.0 / EUR 4 million Financially self-supporting and sustainably profitable Experience from more than 1,900 projects per year at over 800 customers Hamburg Düsseldorf Frankfurt Freiburg Munich Vienna Basle Zurich Bern Lausanne 4 Stuttgart 28.09.2014 When MAA Meets Multitenant 4
2013 © Trivadis AGENDA 1.RAC and Multitenant Why and how Dealing with PDBs and services Demo 2.RAC, DG and MULTITENANT Why and how Dealing with PDBs and services Demo 28.09.2014 When MAA Meets Multitenant 5
2013 © Trivadis 28.09.2014 When MAA Meets Multitenant Part I 6
2013 © Trivadis 28.09.2014 When MAA Meets Multitenant RAC and Multitenant Why and How 7
2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 8 Consolidate on one CDB, one server
2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 9 Consolidate on one CDB, one server The server fills up? Prepare another server and CDB!
2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 10 Consolidate on one CDB, one server The server fills up? Prepare another server and CDB! Create new PDBs on the new server
2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 11 Consolidate on one CDB, one server The server fills up? Prepare another server and CDB! Create new PDBs on the new server, REPEAT!
2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 12 Consolidate on one CDB, one server The server fills up? Prepare another server and CDB! Create new PDBs on the new server, REPEAT! A PDB increases? Need to make room for the new workload
2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 13 Is that consolidation?
2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 14 Is that consolidation? What if you have to change static parameters?
2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 15 Is that consolidation? What if you have to change static parameters? Bouncing your single-instance CDB takes offline all your PDBs
2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 16 Is that consolidation? What if you have to change static parameters? Bouncing your single-instance CDB takes offline all your PDBs You would never stop all your services and reboot the instance, right? Well, on a single-instance you have to do it!
2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 17 With RAC+MT, the Container Database itself is a RAC Database
2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 18 With RAC+MT, the Container Database itself is a RAC Database The PDBs are still available in case of instance crash
2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 19 With RAC+MT, the Container Database itself is a RAC Database The PDBs are still available in case of instance crash Instances can be bounced one at a time without affecting the CDB
2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 20 The CDB can accommodate new PDBs by adding new servers/instances
2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 21 The CDB can accommodate new PDBs by adding new servers/instances The workload is distributed across instances. How?
2013 © Trivadis 28.09.2014 When MAA Meets Multitenant RAC and Multitenant Dealing with PDBs and Services 22
2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 23 The PDBs are mounted by default. Starting the service makes the cluster open the PDB! Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 24 Singleton services open the PDBs only on the nodes they run on. Only the blocks of accessed PDBs will populate one instance’s cache. Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 25 Access big PDBs from more than one instance Either declare the service UNIFORM or create a new one for the same PDB Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 26 Need more room/power? Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 27 Need more room/power? Add an instance and modify/relocate some services Services on CDBRAC_1 Services on CDBRAC_3 Cache on CDBRAC_3 Cache on CDBRAC_1 Services on CDBRAC_2 Cache on CDBRAC_2
2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 28 Need more room/power? Add an instance and modify/relocate some services No need of unplugging/plugging PDBs! They’re in the same CDB! Services on CDBRAC_1 Cache on CDBRAC_3 Cache on CDBRAC_1 Cache on CDBRAC_2 Services on CDBRAC_3 Services on CDBRAC_2
2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 29 If you stop a service Services on CDBRAC_1 Services on CDBRAC_3 Services on CDBRAC_2 Cache on CDBRAC_3 Cache on CDBRAC_1 Cache on CDBRAC_2
2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 30 If you stop a service The PDB is still open but not accessible Cache on CDBRAC_3 Cache on CDBRAC_1 Cache on CDBRAC_2 Services on CDBRAC_1 Services on CDBRAC_3 Services on CDBRAC_2
2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 31 If you stop a service The PDB is still open but not accessible Its blocks are aged out from the buffer cache using the LRU mechanism Services on CDBRAC_1 Services on CDBRAC_3 Services on CDBRAC_2 Cache on CDBRAC_3 Cache on CDBRAC_1 Cache on CDBRAC_2
2013 © Trivadis Service Failover 28.09.2014 When MAA Meets Multitenant 32 After instance crash, a singleton service fails over Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
2013 © Trivadis Service Failover 28.09.2014 When MAA Meets Multitenant 33 After instance crash, a singleton service fails over Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
2013 © Trivadis Srvctl syntax for services and PDBs srvctl add service –db db_unique_name –service service_name –serverpool server_pool –cardinality uniform –role primary –failovertype select –failovermethod basic -policy automatic -failoverdelay 2 –failoverretry 180 -pdb pluggable_database srvctl modify service … -pdb pluggable_database There’s an overall limit of 512 services per CDB, be careful! 28.09.2014 When MAA Meets Multitenant 34
2013 © Trivadis Many PDBs, many services, many changes Important: Oracle recommends that you limit configuration changes to the minimum requirement and that you not perform other service operations while the online service modification is in progress. http://docs.oracle.com/database/121/RACAD/srvctladmin.htm#RACAD005 28.09.2014 When MAA Meets Multitenant 35
2013 © Trivadis RAC and Multitenant: Little demo? 28.09.2014 When MAA Meets Multitenant 36 CDBATL_2 raca01 CDBATL_1 raca02 CDBATL MAAZ
2013 © Trivadis 28.09.2014 When MAA Meets Multitenant Part II 37
2013 © Trivadis 28.09.2014 When MAA Meets Multitenant RAC, DG and Multitenant Why and How 38
2013 © Trivadis RAC, Data Guard & Multitenant, why? 28.09.2014 When MAA Meets Multitenant 39 The reasons of having a Data Guard architecture are the same…
2013 © Trivadis RAC, Data Guard & Multitenant, why? 28.09.2014 When MAA Meets Multitenant 40 The reasons of having a Data Guard architecture are the same…
2013 © Trivadis Multitenant comes with a great benefit… 28.09.2014 When MAA Meets Multitenant 41 Single configuration, simplified administration CDBATL_1 CDBATL_2 CDBATL MAAZ LGWR LGWR LNS LNS RFS RFS CDBGVA_1 CDBGVA_2 CDBGVA MAAZ MRP0
2013 © Trivadis Multitenant comes with a great benefit… 28.09.2014 When MAA Meets Multitenant 42 Single configuration, simplified administration CDBATL_1 CDBATL_2 CDBATL MAAZ LUDO LGWR LGWR LNS LNS RFS RFS CDBGVA_1 CDBGVA_2 CDBGVA MAAZ MRP0
2013 © Trivadis Multitenant comes with a great benefit… 28.09.2014 When MAA Meets Multitenant 43 Single configuration, simplified administration CDBATL_1 CDBATL_2 CDBATL MAAZ LUDO LGWR LGWR LNS LNS RFS RFS CDBGVA_1 CDBGVA_2 CDBGVA MAAZ LUDO MRP0
2013 © Trivadis … or limitation? 28.09.2014 When MAA Meets Multitenant 44 Cannot have different PDBs with different roles CDBATL_1 CDBATL_2 CDBATL MAAZ LUDO LGWR LGWR LNS LNS RFS RFS CDBGVA_1 CDBGVA_2 CDBGVA MAAZ LUDO MRP0
2013 © Trivadis How? 28.09.2014 When MAA Meets Multitenant 45 ONE CDB = ONE Data Guard configuration
2013 © Trivadis How? 28.09.2014 When MAA Meets Multitenant 46 ONE CDB = ONE Data Guard configuration All Data Guard commands (alter database or broker commands) are executed while connected to the CDB$ROOT CDBATL_1 CDBATL_2 CDBATL (CDB$ROOT) MAAZ LUDO
2013 © Trivadis PDB Creation from PDB$SEED 28.09.2014 When MAA Meets Multitenant 47 SQL> create pluggable database MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 SEED SEED
2013 © Trivadis PDB Creation from PDB$SEED 28.09.2014 When MAA Meets Multitenant 48 SQL> create pluggable database MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 SEED SEED MAAZ
2013 © Trivadis PDB Creation from PDB$SEED 28.09.2014 When MAA Meets Multitenant 49 SQL> create pluggable database MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 SEED SEED MAAZ MAAZ Recovery created pluggable database MAAZ Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.435.856973955 from +DATA/CDBGVA/…/DATAFILE/system.280.855055053 Successfully added datafile 24 to media recovery
2013 © Trivadis PDB Creation from PDB$SEED 28.09.2014 When MAA Meets Multitenant 50 SQL> create pluggable database MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 SEED SEED MAAZ MAAZ Recovery created pluggable database MAAZ Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.435.856973955 from +DATA/CDBGVA/…/DATAFILE/system.280.855055053 Successfully added datafile 24 to media recovery MOUNTED OR OPEN READ ONLY
2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 51 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ
2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 52 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ LUDO
2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 53 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ LUDO LUDO Recovery created pluggable database LUDO Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.362.85568186 from +DATA/CDBGVA/…/DATAFILE/system.435.856973955 Successfully added datafile 26 to media recovery
2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 54 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ LUDO LUDO Recovery created pluggable database LUDO Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.362.85568186 from +DATA/CDBGVA/…/DATAFILE/system.435.856973955 Successfully added datafile 26 to media recovery ONLY IF OPEN READ ONLY
2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 55 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ LUDO LUDO Recovery created pluggable database LUDO Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.362.85568186 from +DATA/CDBGVA/…/DATAFILE/system.435.856973955 Successfully added datafile 26 to media recovery ONLY IF OPEN READ ONLY ACTIVE DATAGUARD!!!
2013 © Trivadis PDB Creation from other PDB WITHOUT ADG 28.09.2014 When MAA Meets Multitenant 56 Documentation says: copy the datafiles on the standby before the clone
2013 © Trivadis PDB Creation from other PDB WITHOUT ADG 28.09.2014 When MAA Meets Multitenant 57 Documentation says: copy the datafiles on the standby before the clone But RAC => ASM => OMF => Cannot guess the file names!! Need to workout a solution so that you don’t mess your OMF with aliases
2013 © Trivadis PDB Creation from other PDB WITHOUT ADG 28.09.2014 When MAA Meets Multitenant 58 Documentation says: copy the datafiles on the standby before the clone But RAC => ASM => OMF => Cannot guess the file names!! Need to workout a solution so that you don’t mess your OMF with aliases There are different solutions, too complex to cover here. I’ll just show the easiest one.
2013 © Trivadis PDB Creation from other PDB WITHOUT ADG * 28.09.2014 When MAA Meets Multitenant 59 SQL> create pluggable database LUDO from MAAZ standbys=NONE; Backup/Restore PDB from Primary to Standby over the network Stop Recovery Alter pluggable database LUDO enable recovery; Start Recovery * Not the official way, but much easier IMHO with ASM
2013 © Trivadis Restore PDB from Primary to Standby 28.09.2014 When MAA Meets Multitenant 60 PRIMARY RMAN> backup as copy pluggable database LUDO format '/tmp/ludo%f.dbf'; $ scp /tmp/ludo*.dbf racb01:/tmp STANDBY RMAN> catalog start with ‘/tmp/ludo’ RMAN> set newname for pluggable database LUDO to new; RMAN> restore pluggable database LUDO; RMAN> switch pluggable database LUDO to copy;
2013 © Trivadis 28.09.2014 When MAA Meets Multitenant RAC, DG and Multitenant Dealing with PDBs and services 61
2013 © Trivadis Srvctl syntax for services and PDBs with ADG srvctl add service –db db_unique_name –service ro_service_name –serverpool server_pool –cardinality uniform –role pyhsical_standby –failovertype select –failovermethod basic -policy automatic -failoverdelay 2 –failoverretry 180 -pdb pluggable_database Create the same service on the Primary first, so it exists and can run on the standby Many services per PDB: don’t forget the 512 service limit per CDB!! 28.09.2014 When MAA Meets Multitenant 62
2013 © Trivadis Connection descriptor for MAA LUDOAPP = (DESCRIPTION_LIST= (LOAD_BALANCE=off) (FAILOVER=on) (DESCRIPTION = (CONNECT_TIMEOUT=5) (TRANSPORT_CONNECT_TIMEOUT=3) (RETRY_COUNT=3) (ADDRESS_LIST= (LOAD_BALANCE=on) (ADDRESS = (PROTOCOL = TCP)(HOST = raca-scan)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = LUDOAPP)) ) (DESCRIPTION = (CONNECT_TIMEOUT=5) (TRANSPORT_CONNECT_TIMEOUT=3) (RETRY_COUNT=3) (ADDRESS_LIST= (LOAD_BALANCE=on) (ADDRESS = (PROTOCOL = TCP)(HOST = racb-scan)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = LUDOAPP)) ) ) 28.09.2014 When MAA Meets Multitenant 63
2013 © Trivadis RAC, DG and Multitenant: Little demo? 28.09.2014 When MAA Meets Multitenant 64 raca01 raca02 racb01 racb02 CDBATL Data Guard CDBGVA
2013 © Trivadis BASEL BERN BRUGG LAUSANNE ZÜRICH DÜSSELDORF FRANKFURT A.M. FREIBURG I.BR. HAMBURG MÜNCHEN STUTTGART WIEN ?????????
2013 © Trivadis BASEL BERN BRUGG LAUSANNE ZÜRICH DÜSSELDORF FRANKFURT A.M. FREIBURG I.BR. HAMBURG MÜNCHEN STUTTGART WIEN Thank you! Ludovico Caldara Oracle ACE, Senior Consultant Trivadis AG ludovico.caldara@trivadis.com @ludodba

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Oracle RAC, Data Guard, and Pluggable Databases: When MAA Meets Multitenant (#OOW14 Version)

  • 1. 2013 © Trivadis BASEL BERN BRUGG LAUSANNE ZÜRICH DÜSSELDORF FRANKFURT A.M. FREIBURG I.BR. HAMBURG MÜNCHEN STUTTGART WIEN Oracle RAC, Data Guard, and Pluggable Databases: When MAA Meets Multitenant Ludovico CALDARA Oracle ACE, Senior Consultant Trivadis AG
  • 2. 2013 © Trivadis About Ludovico Caldara 28.09.2014 When MAA Meets Multitenant 2 ■14 Years DBA (started with 7.3.4) ▪I do it everywhere (also on Windows) ■RAC ATTACK Ninja & co-writer ■RAC SIG Board member ■OCP (11g, 12c, MySQL) & OCE ■Italian living in Switzerland ■http://www.ludovicocaldara.net ■@ludodba ■ludovicocaldara
  • 3. 2013 © Trivadis Trivadis is a market leader in IT consulting, system integration, solution engineering and the provision of IT services focusing on and technologies in Switzerland, Germany and Austria. We offer our services in the following strategic business fields: Trivadis Services takes over the interacting operation of your IT systems. Our company O P E R A T I O N 28.09.2014 When MAA Meets Multitenant 3
  • 4. 2013 © Trivadis With over 600 specialists and IT experts in your region 4 11 Trivadis branches and more than 600 employees 200 Service Level Agreements Over 4,000 training participants Research and development budget: CHF 5.0 / EUR 4 million Financially self-supporting and sustainably profitable Experience from more than 1,900 projects per year at over 800 customers Hamburg Düsseldorf Frankfurt Freiburg Munich Vienna Basle Zurich Bern Lausanne 4 Stuttgart 28.09.2014 When MAA Meets Multitenant 4
  • 5. 2013 © Trivadis AGENDA 1.RAC and Multitenant Why and how Dealing with PDBs and services Demo 2.RAC, DG and MULTITENANT Why and how Dealing with PDBs and services Demo 28.09.2014 When MAA Meets Multitenant 5
  • 6. 2013 © Trivadis 28.09.2014 When MAA Meets Multitenant Part I 6
  • 7. 2013 © Trivadis 28.09.2014 When MAA Meets Multitenant RAC and Multitenant Why and How 7
  • 8. 2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 8 Consolidate on one CDB, one server
  • 9. 2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 9 Consolidate on one CDB, one server The server fills up? Prepare another server and CDB!
  • 10. 2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 10 Consolidate on one CDB, one server The server fills up? Prepare another server and CDB! Create new PDBs on the new server
  • 11. 2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 11 Consolidate on one CDB, one server The server fills up? Prepare another server and CDB! Create new PDBs on the new server, REPEAT!
  • 12. 2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 12 Consolidate on one CDB, one server The server fills up? Prepare another server and CDB! Create new PDBs on the new server, REPEAT! A PDB increases? Need to make room for the new workload
  • 13. 2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 13 Is that consolidation?
  • 14. 2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 14 Is that consolidation? What if you have to change static parameters?
  • 15. 2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 15 Is that consolidation? What if you have to change static parameters? Bouncing your single-instance CDB takes offline all your PDBs
  • 16. 2013 © Trivadis Multitenant on a single instance: is it worth? 28.09.2014 When MAA Meets Multitenant 16 Is that consolidation? What if you have to change static parameters? Bouncing your single-instance CDB takes offline all your PDBs You would never stop all your services and reboot the instance, right? Well, on a single-instance you have to do it!
  • 17. 2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 17 With RAC+MT, the Container Database itself is a RAC Database
  • 18. 2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 18 With RAC+MT, the Container Database itself is a RAC Database The PDBs are still available in case of instance crash
  • 19. 2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 19 With RAC+MT, the Container Database itself is a RAC Database The PDBs are still available in case of instance crash Instances can be bounced one at a time without affecting the CDB
  • 20. 2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 20 The CDB can accommodate new PDBs by adding new servers/instances
  • 21. 2013 © Trivadis RAC empowers Multitenant 28.09.2014 When MAA Meets Multitenant 21 The CDB can accommodate new PDBs by adding new servers/instances The workload is distributed across instances. How?
  • 22. 2013 © Trivadis 28.09.2014 When MAA Meets Multitenant RAC and Multitenant Dealing with PDBs and Services 22
  • 23. 2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 23 The PDBs are mounted by default. Starting the service makes the cluster open the PDB! Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
  • 24. 2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 24 Singleton services open the PDBs only on the nodes they run on. Only the blocks of accessed PDBs will populate one instance’s cache. Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
  • 25. 2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 25 Access big PDBs from more than one instance Either declare the service UNIFORM or create a new one for the same PDB Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
  • 26. 2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 26 Need more room/power? Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
  • 27. 2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 27 Need more room/power? Add an instance and modify/relocate some services Services on CDBRAC_1 Services on CDBRAC_3 Cache on CDBRAC_3 Cache on CDBRAC_1 Services on CDBRAC_2 Cache on CDBRAC_2
  • 28. 2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 28 Need more room/power? Add an instance and modify/relocate some services No need of unplugging/plugging PDBs! They’re in the same CDB! Services on CDBRAC_1 Cache on CDBRAC_3 Cache on CDBRAC_1 Cache on CDBRAC_2 Services on CDBRAC_3 Services on CDBRAC_2
  • 29. 2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 29 If you stop a service Services on CDBRAC_1 Services on CDBRAC_3 Services on CDBRAC_2 Cache on CDBRAC_3 Cache on CDBRAC_1 Cache on CDBRAC_2
  • 30. 2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 30 If you stop a service The PDB is still open but not accessible Cache on CDBRAC_3 Cache on CDBRAC_1 Cache on CDBRAC_2 Services on CDBRAC_1 Services on CDBRAC_3 Services on CDBRAC_2
  • 31. 2013 © Trivadis The services are the key! 28.09.2014 When MAA Meets Multitenant 31 If you stop a service The PDB is still open but not accessible Its blocks are aged out from the buffer cache using the LRU mechanism Services on CDBRAC_1 Services on CDBRAC_3 Services on CDBRAC_2 Cache on CDBRAC_3 Cache on CDBRAC_1 Cache on CDBRAC_2
  • 32. 2013 © Trivadis Service Failover 28.09.2014 When MAA Meets Multitenant 32 After instance crash, a singleton service fails over Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
  • 33. 2013 © Trivadis Service Failover 28.09.2014 When MAA Meets Multitenant 33 After instance crash, a singleton service fails over Services on CDBRAC_1 Services on CDBRAC_2 Cache on instance CDBRAC_2 Cache on instance CDBRAC_1
  • 34. 2013 © Trivadis Srvctl syntax for services and PDBs srvctl add service –db db_unique_name –service service_name –serverpool server_pool –cardinality uniform –role primary –failovertype select –failovermethod basic -policy automatic -failoverdelay 2 –failoverretry 180 -pdb pluggable_database srvctl modify service … -pdb pluggable_database There’s an overall limit of 512 services per CDB, be careful! 28.09.2014 When MAA Meets Multitenant 34
  • 35. 2013 © Trivadis Many PDBs, many services, many changes Important: Oracle recommends that you limit configuration changes to the minimum requirement and that you not perform other service operations while the online service modification is in progress. http://docs.oracle.com/database/121/RACAD/srvctladmin.htm#RACAD005 28.09.2014 When MAA Meets Multitenant 35
  • 36. 2013 © Trivadis RAC and Multitenant: Little demo? 28.09.2014 When MAA Meets Multitenant 36 CDBATL_2 raca01 CDBATL_1 raca02 CDBATL MAAZ
  • 37. 2013 © Trivadis 28.09.2014 When MAA Meets Multitenant Part II 37
  • 38. 2013 © Trivadis 28.09.2014 When MAA Meets Multitenant RAC, DG and Multitenant Why and How 38
  • 39. 2013 © Trivadis RAC, Data Guard & Multitenant, why? 28.09.2014 When MAA Meets Multitenant 39 The reasons of having a Data Guard architecture are the same…
  • 40. 2013 © Trivadis RAC, Data Guard & Multitenant, why? 28.09.2014 When MAA Meets Multitenant 40 The reasons of having a Data Guard architecture are the same…
  • 41. 2013 © Trivadis Multitenant comes with a great benefit… 28.09.2014 When MAA Meets Multitenant 41 Single configuration, simplified administration CDBATL_1 CDBATL_2 CDBATL MAAZ LGWR LGWR LNS LNS RFS RFS CDBGVA_1 CDBGVA_2 CDBGVA MAAZ MRP0
  • 42. 2013 © Trivadis Multitenant comes with a great benefit… 28.09.2014 When MAA Meets Multitenant 42 Single configuration, simplified administration CDBATL_1 CDBATL_2 CDBATL MAAZ LUDO LGWR LGWR LNS LNS RFS RFS CDBGVA_1 CDBGVA_2 CDBGVA MAAZ MRP0
  • 43. 2013 © Trivadis Multitenant comes with a great benefit… 28.09.2014 When MAA Meets Multitenant 43 Single configuration, simplified administration CDBATL_1 CDBATL_2 CDBATL MAAZ LUDO LGWR LGWR LNS LNS RFS RFS CDBGVA_1 CDBGVA_2 CDBGVA MAAZ LUDO MRP0
  • 44. 2013 © Trivadis … or limitation? 28.09.2014 When MAA Meets Multitenant 44 Cannot have different PDBs with different roles CDBATL_1 CDBATL_2 CDBATL MAAZ LUDO LGWR LGWR LNS LNS RFS RFS CDBGVA_1 CDBGVA_2 CDBGVA MAAZ LUDO MRP0
  • 45. 2013 © Trivadis How? 28.09.2014 When MAA Meets Multitenant 45 ONE CDB = ONE Data Guard configuration
  • 46. 2013 © Trivadis How? 28.09.2014 When MAA Meets Multitenant 46 ONE CDB = ONE Data Guard configuration All Data Guard commands (alter database or broker commands) are executed while connected to the CDB$ROOT CDBATL_1 CDBATL_2 CDBATL (CDB$ROOT) MAAZ LUDO
  • 47. 2013 © Trivadis PDB Creation from PDB$SEED 28.09.2014 When MAA Meets Multitenant 47 SQL> create pluggable database MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 SEED SEED
  • 48. 2013 © Trivadis PDB Creation from PDB$SEED 28.09.2014 When MAA Meets Multitenant 48 SQL> create pluggable database MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 SEED SEED MAAZ
  • 49. 2013 © Trivadis PDB Creation from PDB$SEED 28.09.2014 When MAA Meets Multitenant 49 SQL> create pluggable database MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 SEED SEED MAAZ MAAZ Recovery created pluggable database MAAZ Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.435.856973955 from +DATA/CDBGVA/…/DATAFILE/system.280.855055053 Successfully added datafile 24 to media recovery
  • 50. 2013 © Trivadis PDB Creation from PDB$SEED 28.09.2014 When MAA Meets Multitenant 50 SQL> create pluggable database MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 SEED SEED MAAZ MAAZ Recovery created pluggable database MAAZ Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.435.856973955 from +DATA/CDBGVA/…/DATAFILE/system.280.855055053 Successfully added datafile 24 to media recovery MOUNTED OR OPEN READ ONLY
  • 51. 2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 51 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ
  • 52. 2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 52 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ LUDO
  • 53. 2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 53 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ LUDO LUDO Recovery created pluggable database LUDO Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.362.85568186 from +DATA/CDBGVA/…/DATAFILE/system.435.856973955 Successfully added datafile 26 to media recovery
  • 54. 2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 54 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ LUDO LUDO Recovery created pluggable database LUDO Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.362.85568186 from +DATA/CDBGVA/…/DATAFILE/system.435.856973955 Successfully added datafile 26 to media recovery ONLY IF OPEN READ ONLY
  • 55. 2013 © Trivadis PDB Creation from other PDB 28.09.2014 When MAA Meets Multitenant 55 SQL> create pluggable database LUDO FROM MAAZ; CDBATL_1 CDBATL_2 CDBATL LGWR LGWR LNS LNS RFS RFS CDBATL_1 CDBATL_2 CDBATL MRP0 MAAZ MAAZ LUDO LUDO Recovery created pluggable database LUDO Recovery copied files for tablespace SYSTEM Recovery successfully copied file +DATA/CDBGVA/…/DATAFILE/system.362.85568186 from +DATA/CDBGVA/…/DATAFILE/system.435.856973955 Successfully added datafile 26 to media recovery ONLY IF OPEN READ ONLY ACTIVE DATAGUARD!!!
  • 56. 2013 © Trivadis PDB Creation from other PDB WITHOUT ADG 28.09.2014 When MAA Meets Multitenant 56 Documentation says: copy the datafiles on the standby before the clone
  • 57. 2013 © Trivadis PDB Creation from other PDB WITHOUT ADG 28.09.2014 When MAA Meets Multitenant 57 Documentation says: copy the datafiles on the standby before the clone But RAC => ASM => OMF => Cannot guess the file names!! Need to workout a solution so that you don’t mess your OMF with aliases
  • 58. 2013 © Trivadis PDB Creation from other PDB WITHOUT ADG 28.09.2014 When MAA Meets Multitenant 58 Documentation says: copy the datafiles on the standby before the clone But RAC => ASM => OMF => Cannot guess the file names!! Need to workout a solution so that you don’t mess your OMF with aliases There are different solutions, too complex to cover here. I’ll just show the easiest one.
  • 59. 2013 © Trivadis PDB Creation from other PDB WITHOUT ADG * 28.09.2014 When MAA Meets Multitenant 59 SQL> create pluggable database LUDO from MAAZ standbys=NONE; Backup/Restore PDB from Primary to Standby over the network Stop Recovery Alter pluggable database LUDO enable recovery; Start Recovery * Not the official way, but much easier IMHO with ASM
  • 60. 2013 © Trivadis Restore PDB from Primary to Standby 28.09.2014 When MAA Meets Multitenant 60 PRIMARY RMAN> backup as copy pluggable database LUDO format '/tmp/ludo%f.dbf'; $ scp /tmp/ludo*.dbf racb01:/tmp STANDBY RMAN> catalog start with ‘/tmp/ludo’ RMAN> set newname for pluggable database LUDO to new; RMAN> restore pluggable database LUDO; RMAN> switch pluggable database LUDO to copy;
  • 61. 2013 © Trivadis 28.09.2014 When MAA Meets Multitenant RAC, DG and Multitenant Dealing with PDBs and services 61
  • 62. 2013 © Trivadis Srvctl syntax for services and PDBs with ADG srvctl add service –db db_unique_name –service ro_service_name –serverpool server_pool –cardinality uniform –role pyhsical_standby –failovertype select –failovermethod basic -policy automatic -failoverdelay 2 –failoverretry 180 -pdb pluggable_database Create the same service on the Primary first, so it exists and can run on the standby Many services per PDB: don’t forget the 512 service limit per CDB!! 28.09.2014 When MAA Meets Multitenant 62
  • 63. 2013 © Trivadis Connection descriptor for MAA LUDOAPP = (DESCRIPTION_LIST= (LOAD_BALANCE=off) (FAILOVER=on) (DESCRIPTION = (CONNECT_TIMEOUT=5) (TRANSPORT_CONNECT_TIMEOUT=3) (RETRY_COUNT=3) (ADDRESS_LIST= (LOAD_BALANCE=on) (ADDRESS = (PROTOCOL = TCP)(HOST = raca-scan)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = LUDOAPP)) ) (DESCRIPTION = (CONNECT_TIMEOUT=5) (TRANSPORT_CONNECT_TIMEOUT=3) (RETRY_COUNT=3) (ADDRESS_LIST= (LOAD_BALANCE=on) (ADDRESS = (PROTOCOL = TCP)(HOST = racb-scan)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = LUDOAPP)) ) ) 28.09.2014 When MAA Meets Multitenant 63
  • 64. 2013 © Trivadis RAC, DG and Multitenant: Little demo? 28.09.2014 When MAA Meets Multitenant 64 raca01 raca02 racb01 racb02 CDBATL Data Guard CDBGVA
  • 65. 2013 © Trivadis BASEL BERN BRUGG LAUSANNE ZÜRICH DÜSSELDORF FRANKFURT A.M. FREIBURG I.BR. HAMBURG MÜNCHEN STUTTGART WIEN ?????????
  • 66. 2013 © Trivadis BASEL BERN BRUGG LAUSANNE ZÜRICH DÜSSELDORF FRANKFURT A.M. FREIBURG I.BR. HAMBURG MÜNCHEN STUTTGART WIEN Thank you! Ludovico Caldara Oracle ACE, Senior Consultant Trivadis AG ludovico.caldara@trivadis.com @ludodba