Primary and DR server OS version can be different

Dear All,
We have RAC server 10.2.0.1.0.
OS
~]# cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 4)
~]# uname -r
2.6.9-42.ELsmp
~]# uname -a
Linux server1 1 2.6.9-42.ELsmp #1 SMP Wed Jul 12 23:32:02 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux
Now we are going to configure Data gaurd, can we install REHL 5 or 6 because 4 is not supported any more. please guide me.
Thanks & regards,
Sher khan

Sher khan;
Your questions
Now we are going to configure Data gaurd, can we install REHL 5 or 6 because 4 is not supported any more. please guide me.
I am asking regarding release. see primary server is REHL 4 can I install REHL 5 on DR, both are 64bit. is there will be problem.I'm guessing you have at least two issues :
End of support of Red Hat Server 4.
What Version of Red Hat to use.
Unless something has change very recently you cannnot use Red Hat Server 6. So that leaves Red Hat Server 5.
Now I'm reading between the lines some but it appears you may have a third issue, How to upgrade your OS without touching Oracle.
What I have done is install Red Hat on a completely separate partition. For 64 bit this is at least 30 GB since you need an 8GB swap area.
If you do this, this leaves only two small Oracle files in the /etc directory :
oraInst.loc
oratab
If your OS people can keep track of the Oracle OS user and its crontab ( if you have one ) then the OS can be upgraded without touching Oracle.
My oratab file is simple and easy to recreate or save off :
# This file is used by ORACLE utilities. It is created by root.sh
# and updated by the Database Configuration Assistant when creating
# a database.
# A colon, ':', is used as the field terminator. A new line terminates
# the entry. Lines beginning with a pound sign, '#', are comments.
# Entries are of the form:
# $ORACLE_SID:$ORACLE_HOME:<N|Y>:
# The first and second fields are the system identifier and home
# directory of the database respectively. The third filed indicates
# to the dbstart utility that the database should , "Y", or should not,
# "N", be brought up at system boot time.
# Multiple entries with the same $ORACLE_SID are not allowed.
PRIMARY:/u01/app/oracle/product/11.2.0.2:YMy oraInst.loc is even smaller :
inventory_loc=/u01/app/oraInventory
inst_group=oinstallIf you setup the OS on a separate Partition you can repair, recreate or upgrade it without ever touching Oracle. Mind you there may be some downtime, but damage to the OS should not cause damage to Oracle.
So if and when Red Hat Server 6 is supported you are in position for that upgrade. If not you are in position for an OS move.
But more importantly you avoid rework and not only is your OS not controling Oracle, Oracle is not controlling your OS ( as long as you can compile you are good ).
This is the note I would look at :
Data Guard Support for Heterogeneous Primary and Logical Standbys in Same Data Guard Configuration [ID 1085687.1]
Number 13 is the one I would look at.
Even if you have Heterogeneous Support, think ahead. You might not next time.
Best Regards
mseberg

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Thanks for your support.

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sherkhan
     Newbie
Handle:      sherkhan
Status Level:      Newbie (30)
Registered:      Feb 28, 2010
Total Posts:      115
Total Questions:      39 (26 unresolved)
Close the threads as answered, keep the forum clean.

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Pas Moh wrote:
Hi All,
I am having below doubts/errors. I need help to solve all the below questions.
I configured Dataguard successfully. Now the sync is upto date using the below parameters (using 11g):
at primary:
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at sandby:
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Still i face below messages in the alertliog. Can anybody clearly explain me all the points.
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ORA-1652: unable to extend temp segment by 640 in tablespace NEWTEMP
I get this error when my archvie destination got filled up, later we released the enough space, the archived are generating. Still i see this message once in between. Need to solve this.This error has absolutely nothing to do with the handling of archive logs, the status of archivelog destination, or primary/standby. Any relation you thought you saw was pure coincidence.
>
>
Primary:
Checkpoint not complete ( i see this message very often, want to get rid of this)
Here is the very first hit I got when I googled "oracle checkpoint not complete". Tom says it better than I would have.
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kcrrvslf: active RFS archival for log thread 1 sequence (sometimes i see this KCRRVSLF)
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>
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In that case I would check that the CONTROL_FILE_RECORD_KEEP_TIME initialization parameter is defined to a value that is sufficiently large enough to maintain adequate log switch information to resolve archivelog gaps.
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>
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Thanks in advance.
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[email protected]

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