sharing oracle binariesv5appliance™ best practice guidelines for oracle® recommends not to use it...

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© 2007 IBM Corporation IBM Oracle ICC

Sharing Oracle BinariesFor Linux on System Z

Bruce Frank [email protected]

IBM Oracle ICC2 © 2007 IBM Corporation



Sharing Oracle BinariesWhat we will cover

•Definition of Oracle Binaries

•Why share binaries

• History

• What can you share

• How to share

• Summary

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Definition of Oracle BinariesOracle Binaries are the files and directories

in ORACLE_HOME that are used to create databases, access databases, log database activity and other functions related to databases.

We refer to the VM guest machine that house the Oracle binaries as the “Master”and the VM guest machines that access the binaries as the “Client”




Why share binariesReduce disk space utilizationSingle point of maintenanceDeployment speedComplements cloning of Linux

VS

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HistoryUnix and Linux System administrators have used methods to share files in the past

Oracle did not support sharing of binaries before 10gR2, with the support of OCFS2 and 10gR2 Oracle does support sharing binaries




Out on the WEBFrom Oracle's web"OCFS Release 2 enables customers to use a file system on their shared disk so they

can do things like a shared ORACLE_HOME installation

From "the netapp filers blog"Sharing of Oracle Environments thru NFS Question: What can be shared in Oracle environments?Dr. Toaster's Answer: There are 3 types of sharing models available when thinking of Oracle and NFS:1. Shared Oracle Binaries - Sharing a single Oracle DB installation and configuring

multiple databases to mount and use that single directory via NFS mounts.2. Shared Oracle_HOME - Enabling single databases to share the same binaries, similar

to RAC. Oracle 9i originally did not support Shared Oracle_HOME, but at this point it is supported to use a Shared Oracle_HOME over NFS mounts. Nevertheless, it is suggested to use it for testing and development environments. The Network Appliance™ Best Practice Guidelines for Oracle® recommends not to use it for production and HA environments.

3. Shared APPL_TOP - Sharing the Oracle E-Business Suite binaries. See Reducing Administration Costs for Oracle® E-Business Suite Using NetApp Filers for more information.

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What can you shareORACLE_HOME components that do not get modified

xdkrdbms/lib32 oraInst.locmesgdiagnostics

wwgrdbms/lib oracoremddemo

uixrdbms/jlibopmnlib32 ctx

tg4tera rdbms/install OPatchlib css

tg4sybsrdbms/doc olapldapcrs

srvmrdbms/demonlsjreconfig

sqlplusrdbms/admin network/toolsjlibclone

qljracgnetwork/mesgjdkcdata

slaxprecompnetwork/lib32 jdbcbin

root.shplsqlnetwork/libjavavmassistants/rconfig

relnotesperlnetwork/jlibinventoryassistants/jlib

rdbms/xml owmnetwork/install install.platformassistants/dbua

rdbms/public ouinetwork/dochsassistants/dbca

rdbms/mesgordmgwhasassistants/bin




What Can NOT be sharedORACLE_HOME directories that require read/write access

dbsassistants/logsnetwork/adminnetwork/agentnetwork/lognetwork/tracerdmbs/audit/rdbms/log

OracleDatabase Files

archive1.dbfcntrl01.dbfctx1.dbfdbfile.tgzinvcmplst.plinvdbob.sqllog1.dbfmedia1.dbfmobile01.dbfnologging1.dbfodm.dbf

olap.dbfowa1.dbfportal.dbfqueues1.dbfreference1.dbfsummary1.dbfsys1.dbfsysaux01.dbftmp1.dbftx_data1.dbftx_idx1.dbfundo01.dbf

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How to shareSetup VM guest

See RedBooks for examples

Set VM minidisk to be used by Master Oracle Linux guest

Share VM minidisk with read only options for Client Oracle Linux guest




How to share (continue)Install Oracle on Master Oracle Linux guest

Create directories for ORACLE_HOME components that need to be updated on each Client Oracle Linux guest that will use the share binaries

Create symbolic links for ORACLE_HOME components that don’t need to be updated on each Client Oracle Linux guest that will use the share binaries to corresponding directory where the shared disk is mounted

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A picture is worth a thousand words

Linux Local Disk

Master Oracle Linux Guest Client Oracle Linux Guests




Sample Linux commands# mount /dev/dasdNN /SharedOracle

# ln -s /SharedOracle/bin $ORACLE_HOME/bin► This needs to be done for all directories shared

# mkdir –p assistants/logs► This need to be done for all directories NOT shared

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What about RACOCFS2 RAC automatically shares binaries if the installation is on a cluster file systemUsing VM shared mini disk method can be accomplished.Single point of failure RAC is used for high availability and sharing binaries would defeat that purpose




Considerations• Group Oracle Linux Guest

Use departmental or functional grouping

• Do not share all databases with one set of binariesIf disk has problems all guest will have problems

• Best to be use for development and testing or low risk production

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SummarySharing saves disk space and provides a single point of maintenance, while making it easy and fast to provide a Linux guest with Oracle Make sure you plan and use a standard naming conventionRead chapter 4 of Redbook SG24-7191 Sharing Oracle binaries with Oracle 10gR2Test your implementation





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