on 03-09-2010 2:38 PM
I am using IBM i-series DB2. Can we have mutiple JDK's in same OS? How this can be supported.
Can we have envt variables in the specific SIDs?
Requirement -
PI u2013 JDK 1.5 Windows 32 bit
EP u2013 JDK 1.4.2 Windows 64 bit
ECC u2013 JDK 1.4.2 64 bit
Thanks,
Dhanz
Hi,
PI u2013 JDK 1.5 Windows 32 bit
EP u2013 JDK 1.4.2 Windows 64 bit
ECC u2013 JDK 1.4.2 64 bit
Different SID will have different <SID>adm users. you can install different jdks at different different locations and then u can set JAVA_HOME and PATH variables at <SID>adm User level instead of System Level.
For J2ee Engine , the parameter jstartup/vm/home = <location of the jdk> setting in instance profile has precedence over individual JDK settings in the J2EE Engine configuration database and the sdm_jstartup.properties. Please refer SAP Note 718901 - How to Change the JDK of the J2EE Engine to get more info.
SDM gets the JVM location from property file sdm_jstartup.properties instead of DB.
JDK for the Visual Admin, ConfigTool, and SDM GUI still have to be changed separately.
During Installation of SAP System You can set system wide JAVA_HOME and PATH variables.
Regards,
Bhavik G. Shroff
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Thanks for the response.
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Hi,
the correct JDK for an SAP system is automatically set/installed during the installation process and profile parameters, e.g. jstartup/vm/home are set accordingly.
For SAP Systems that require a JDK 1.4 (e.g. all Systems that run on an SAP Basis < 7.10), we recommend the IT4J(J9) JVM that is available with IBM i release 6.. See SAP note 1161275.
SAP systems on Basis >= 7.10 will install the SAP JVM 1.5 and set up the environment accordingly.
For the <SID>ADM/<SID>OFR users, the environment variable JAVA_HOME will be set to the SAP system's JDK.
Best regards,
Christoph
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