25vcs6unixclusterdatab Trans

7/24/2019 25vcs6unixclusterdatab Trans

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Veritas Cluster Server 6.0 for UNIX:Example Application Conurations

Example 2: Clustering Databases


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!opic "#$ectives

VCS database agentsDescribe VCS agents for managingdatabases.

Databasepreparation

Prepare a database for use in a VCSenvironment.

The database agentfor racle !nstall and con"gure the VCS racle agent.

Database failoverbehavior

Con"gure database failover behavior.

#dditional racle

agent functions

!mplement additional functionalit$ provided

b$ the racle agent.

%esson o#$ectives


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#fter completing this topic% $ou&ill be able to describe VCSagents for managing databases.

VCS &ata#ase aents


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Aents for manain &ata#ases

Database agents

'ou can also manage some databases using the#pplication agent or customi(ed agents.

)ot all agents are supported on allplatforms.

!


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'ata#ase aent functions

* Start a speci"ed databaseinstance.

* Stop the speci"ed instance.

* +onitor the instance.

* Clean up after a fault to enable

failover and prevent possibleconcurrenc$ violations.

+ost database agents have multilevel monitoring.

,asic-level monitoring ma$ chec the process table forapplicable database processes.

Detail or second-level monitoring ma$ &rite to a testtable in the speci"ed database.


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Secon&(level monitorin

* # database user account &ith updateprivileges.

*The pass&ord for the database user account.

*The name of the database table.

*The name of the S/0 script used to &rite to

the table

!nformation re1uired to access and &rite to a table


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)onitorin listener processes

* Some databases have listeners built-in and do notre1uire additional VCS agents for monitoring.

*The )etlsnr agent has t&o-level monitoring for theracle listener:

,asic: Scans the process table for the tnslsnrprocess

Detail: 3ses lsnrctlto test the listener

Data

Server

)et4

racleserver

0istener

Protocol

)S

3ser


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#fter completing this topic% $ou&ill be able to prepare a databasefor the VCS environment.

'ata#ase preparation


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'*+ on AIX an&%inux

Verif,in soft-are compati#ilit,

* 3se the latest database agent available for the VCS version in use.

* Chec agent guides to verif$ that the database version is supported.

* Examples:

racle agent 5.6:

* VCS 5.6

* Solaris SP#7C 86 92-%5;-bit

"racle onSolaris

sort.symantec.com
http://_original/sort.symantec.comhttp://_original/sort.symantec.com


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'ata#ase proram #inar,/ les

Sare& storae%ocal &is1

Provides redundanc$

7e1uires the databaseto be installed andcon"gured identicall$ oneach s$stem

Simpli"es con"guration&hen there are man$

s$stems that can runthe database

7e1uires all s$stems tohave the same mountpoint director$ for thedatabase home

director$

Comparin #inar, le locations


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'ata les

2a- volume

3ile s,stem

ile s$stems must be located on shared diss.

Create the same "le s$stem mount point on each s$stemin the cluster.

Set the permissions for the volumes to be o&ned permanentl$ b$the database:

vxedit g diskgroupset group=dba user=oracle \mode=660 volume

'ou cannot change permission onl$ in 3)!=. VxV+ sets volumepermissions upon import.

Comparin sare& storae o#$ects


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'ata#ase(relate& s,stem les

Database-related s$stem "les must be consistent on all

s$stems that can run the database:* Database user accounts

* Pass&ords for database user accounts

* Database group entries

* 0istener entries

* Database shared memor$ settings

*The database service group 9virtual< !P address

)TE: 7efer to Database vendor documentation for details


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Net-or1 conuration

or listener service failover:

* !nclude at least one !P resource in the service group for thedatabase.

* Set the host name for this virtual !P address for the host "eld inthe listener con"guration "le.LISTENER=

(DESCRIPTION=

(ADDRESS_LIST=

(ADDRESS=(PROTOCOL=tcp)(HOST=hr_ora)(PORT=1521))

(ADDRESS=(PROTOCOL=ipc)(E!="#tproc))))

$ $ $

$ $ $

1&$1&$21$5' hr_ora

$ $ $ 86.86.28.@;

!P

list"n"r$ora

"tchosts


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#fter completing this topic% $ou&ill be able to install andcon"gure the racle agent.

!e &ata#ase aentfor "racle


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Installin &ata#ase aents

Database agents:

* #re automaticall$ installed on all cluster s$stemsif $ou select recommended or all pacage sets

* #re included in the V7TSvcsea pacage

* +ust be installed on all database failover targets$stems.

* Can be installed manuall$ from the soft&aredistribution manuall$ using operating s$stemutilities

Note: #gent-speci"c t$pes "le must be added toain$c*if $ou install agents manuall$


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4i availa#ilit, &ata#ase conurationovervie-

!nstall database s&

Con"gure database

Test database

Stop resources

)

#dd service group

Prepare S

Test service group

#ddtest resources

'

+ores$stems

,inaries on local storage


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"racle service roup conurationexample

hrForasg

hrForadatavol

hrForadatamnt

hrForacle

hrForaarchivemnt

hrForaredomnt

hrForadg

hrForanic

hrForalistener

hrForaip

hrForaredovolhrForaarchivevol


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2esource &enition value

Service group name hrForasg

7esource name hrForacle

7esource t$pe racle

Required attributes

Sid ?7

&ner oracle

?ome hrdata

Conurin an "racle resource

* Starts and stops anracle instance

* +onitors the processtable

ain$c*

Oracl" hr_ora(Si+ = HR

O,n"r = oracl"Ho" = -hr+ata-)


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Value Action

ST#7T3P 7uns start.p

ST#7T3PF7CE

9default

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