11g r2 rac administration-2
TRANSCRIPT
Oracle 11g R2 RAC Administration Presented by
Ebin & Suraj
Objectives
After completing this lesson, you should be able to do the following:
• Definitions• Differences - Oracle 10g R2, 11g R1, 11g R2• New Features in 11g R2 RAC• Terms / Terminology in 11g R2 RAC• 11g R2 RAC Architecture• Clusterware Scripts• ASM Concepts• ASM Architecture• ASM Sample Scripts
Definitions
Cluster Clusterware ASM ACFS
Grid Infrastructure
+
Database
Oracle RAC 11g R2
Differences 10g R2 11G R1 11G R2
Node Reboot : OPROCd process Node Reboot : OPROCd process Handled by OHASd process
NTP file is used for Time synchAcross other nodes
NTP file is used for Time synchAcross other nodes
We have NTP as well as CTSSD.Here CTSSD act as observer
ASM is handled using Asmcmd and adding/modifying diskgroup was done by logging in as “/as sysdba”
ASM is handled using Asmcmd
Additionally Here we have ASMCA to add diskgroups. We can use the follSqlplus “ /as sysasm”
ASM doesn’t support other filesIncluding OCR or Voting Disk, but still these were called as ASM files
ASM doesn’t support other filesIncluding OCR or Voting Disk, but still these were called as ASM files
ASM can support 3rd party files asWell as we can store OCR and Voting Disk file. We have ADVM for this
Application Failover takes huge time . Has FAN,ONS to handle this process
Application Failover takes huge time . Has FAN,ONS to handle this process
Fast Connection Failover. LessFailover time .Has FAN ,ONS .
We had to hardcode detailsIn /etc/hosts file on each node and we used DNS server having each entries
We had to hardcode detailsIn /etc/hosts file on each node and we used DNS server having each entries
We have GNS which handles all IP addresses dynamically that is fetched from DHCP.
NO separate Load BalancingTechnique handled
NO separate Load BalancingTechnique handled
Here we have SCAN listener To handle requests effectively, hence having more high availability
Database, Clusterware,ASM hadSeparate home
Database, Clusterware,ASM hadSeparate home
Only 2 Oracle Home .ASM+Clusterware in same home
Manual Backup of Voting DiskIs highly risky and important
Manual Backup of Voting DiskIs highly risky and important
Voting Disk backup is automatic whenever there is structural change and stores info in OCR.
Terms / Terminology in 11g R2 RAC
OCR Oracle Cluster registry
VIP Virtual IP address
GNS Grid Naming Service
DHCP Dynamic Host configuration Protocal
DNS Domain Name server
GPNP Grid Plug and Play
MDNS Multicast Domain Name Service
SCAN Single Client Access Name
ONS Oracle Notification Service
FAN FAST Application Notification
Terms / Terminology in 11g R2 RAC (Continue….)
CTSS Cluster Time Synchronization Service
CSS Cluster Synchronization Service
EVM Event Manager
ASMCA ASM Configuration Assistant
ACFS Oracle ASM Cluster File System
ADVM Oracle Dynamic Volume Manager
RAID Redundant Array of inexpensive disks
LBA Logical Block Address
TAF Transparent Application Failover
SCAN (Single Client Access Name)
• Network Requirements For Using SCAN – Define the SCAN in your corporate DNS (Domain Name Service) – Use the Grid Naming Service (GNS)
• SCAN Configuration in the Cluster
11g R2 RAC Architecture
11g R2 RAC Architecture (by hand)
Clusterware Scripts
Description Commands
SCAN STATUSCheck config of scan
srvctl status scansrvctl config scan
Start Scan $GRID_HOME/bin/srvctl start scan_listener
Relocate Scan srvctl relocate scan -i 1 -n plwcdbuat01 -- (plwcdbuat01 is a new node name where u want to reallocate scan 1)
To list all the sub-modules/u01/app/11.2.0/grid/bin/crsctl lsmodules crs/u01/app/11.2.0/grid/bin/crsctl lsmodules evm/u01/app/11.2.0/grid/bin/crsctl lsmodules css
Network issue /u01/crs/oracle/product/11.2.0/crs/log/oraclebi2/agent/crsd/orarootagent_root
To check ocr file ocrcheck
Grid Plug and play cluvfy comp gpnp
nodes in the cluster olsnodes -n -p -i
Start Cluster services on bi1 crsctl start cluster -n oraclebi1Stop resource crsctl stop resource ora.crsd
Clusterware Scripts (Continue…….)
Description Commands
start resource crsctl start resource ora.crsdcrsctl start res ora.registry.acfs -n oracletest1
Stop diskgroups and ASM instance
srvctl stop diskgroup -g datasrvctl stop diskgroup -g backupsrvctl stop asm
To create a dependency between FRA diskgroup and a database.
$srvctl modify database -d <unique database_name> -a "DATA,FRA"$srvctl config database -d <unique database_name>
Add databasesrvctl add database -d live -o $ORACLE_HOMEsrvctl add instance -d live -i live2 -n prod-rac02srvctl enable database -d livesrvctl enable instance -d live -i live2
srvctl helpcrsctl help
srvctl -hcrvctl -h
Scan IP settings and Register Database
alter system set remote_listener='oraclei-scan.est.org.uk:1521' scope=both sid='*';alter system set local_listener='(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=oraclebi-vip)(PORT=1521))))' scope=both sid='ABC';
ALTER SYSTEM REGISTER;
ASM Concepts
ASM DISK
Diskgroup
Redundancy Level
Fast Mirror Resync
IDP
ASM Architecture
ASM Sample Scripts
Description Commands
create ASM Disk Group CREATE DISKGROUP data_dg1 EXTERNAL REDUNDANCY DISK ‘/dev/dsk/sdc5’, ‘/dev/dsk/sdd5’
configure ASM Disks in UNIX / LINUX Environment
# vi /etc/sysconfig/rawdevices
/dev/raw/raw1 /dev/add1
/dev/raw/raw2 /dev/sdd2
/dev/raw/raw3 /dev/sdd3
# vi /etc/rc.d/rc.local
chown oracle:dba /dev/raw/raw*
chmod 660 /dev/raw/raw*
configure ASM Disks using ASMLIB
a) Download ASMLIB rpm at oracle site
b) /etc/init.d/oracleasm createdisk VOL1 /dev/sde1
add new disks to an existing ASM disk group
alter diskgroup data_dg1 add failgroup ctlr3 disk ‘/asmdisks/disk5’ name dg5 noforce
resizing an ASM disk group alter diskgroup data_dg1 resize all size 200m
ASM Sample Scripts (Continue……)
Description Commands
check all disks in a specific disk group without repairing alter diskgroup data_dg2 check all norepair
check a specific disk in a specific disk group and repair the disk if needed
alter diskgroup data_dg1 check disk dg_5
mount and dismounting ASM disk groups
alter diskgroup data_dg1 dismount;
alter diskgroup data_dg1 mount;
drop just one disk form an ASM disk group alter diskgroup data_dg1 drop disk dg_5
“undrop” a recently-dropped disk alter diskgroup data_dg1 undrop disk dg_5
create Tablespaces using ASM Disks
create tablespace indy_data datafile ‘+DATA_DG1’ size 100m
set the parameter db_create_file_dest to +DATA_DG1
Questions
Special Thanks
Sailaja
Organized by
Jayakrishnan Pillai
Ebin Kadavi Suraj Daga
Email: [email protected] [email protected]
Thanks For Joining !!