Any experience/suggestions with Oracle on Sun Storagetek 2540 SAN via NFS?
Hi,
Currently Oracle 11g is up and running on local drives. And we intend to move it off to Sun Storagetek 2540 SAN with Sun server 4140 (as NFS server) via NFS. So as far as the database server is concerned, it'd be NFS mount to the NFS server.
There's a new feature in Oracle 11g, Direct NFS Client, which is supposed to be more effective and more efficient than relying on O/S handling of NFS protocol. But in the white paper, it ONLY mentioned about NFS NAS scenario, not SAN. But I think it'd work with SAN as well, because as far as the database server is concerned, it's communicating to NFS server via NFS protocol. What do you think? Any experience/suggestions?
In terms of Storagetek 2540 SAN support, the Oracle's official answer would be "it's not supported unless the storage vendor and the storage device are listed in the Oracle Storage Compatibility Program list..." However, OSCP has been discommissioned in 1/2007, and Storagetek 2540 was introduced AFTER the date.
I think it MIGHT work given it's Sun/Oracle alliance.
What do you think?
Input/suggestion is appreciated,
Helen
My 3 year old linux installtion on my laptop, which is my NFS client most of the time uses udp as default (kernel 2.4.19).
Anyway the key is that the NFS client, or better, the RPC implementation on the client is intelligent enough to detect a failed TCP connection and tries to reestablish it with the same IP address. Now once the cluster has failed over the logical IP the reconnect will be successful and NFS traffic continues as if nothing bad had happened. This only(!) works if the NFS mount was done with the "hard" option. Only this makes the client retry the connection.
Other "dumb" TCP based applications might not retry and thus would need manual intervention.
Regarding UFS or PxFS, it does not make a difference. NFS does not know the difference. It shares a mount point.
Hope that helped.
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Oracle recommend configuring a Sun StorageTek 6140 with 15 hard disks
Hi,
How would Oracle recommend configuring a Sun StorageTek 6140 with 15 hard disks for optimal use with multiple Solaris servers running Oracle instances connected via a SAN? Should the storage array be configured as a single RAID 5 device and then LUNs created for the different servers? Or should each Oracle instance have its own dedicated hard disks?
Also might we see better performance if we used Solid State Devices for the ZFS Intent Log (ZIL) and/or L2ARC on ZFS, instead of using the UFS file system straight to the SAN?
Regards
NMI don't think Oracle would recommended any particular way. I would consider the following, but your mileage may vary, so testing is very important.
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Hi
Our Oracle server v 8.1.7 running on HP-UX11.
I know that weblogic provides a client library for 8.1.6
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=========
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# occurred at pc=c39c64a0
# Error ID:
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3050
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=========
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at
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============
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SrikanthSrikanth,
I suggest that you have a look at DataDirect SequeLink JDBC driver. It has
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http://www.merant.com/products/datadirect/jdbc/sl5/overview.asp
Cheers,
Dimitri
"Minnam" <[email protected]> wrote in message
news:3b4ea44c$[email protected]..
>
Hi
Our Oracle server v 8.1.7 running on HP-UX11.
I know that weblogic provides a client library for 8.1.6
only. We can't switch back to 8.1.6.
We have Oracle client v 8.1.7 installed in the same host where
weblogic is running.
%echo $SHLIB_PATH
/opt/oracle/product/8.1.7/lib:/opt/weblogic/lib/hpux11:/opt/weblogic/lib/hpu
x11/oci816_8
Weblogic provided client library oci816_8.
And when we tried to use jDriver JVM is dumping core.
=========
# Java version:
# HotSpot VM (mixed mode)
# HotSpot Virtual Machine Error, Unexpected Signal 11
# occurred at pc=c39c64a0
# Error ID:
/CLO/Components/JAVA_HOTSPOT/Src/build/hp-ux/../../src/os/hp-ux/vm/os_hp-ux.
cpp,
3050
/startWebLogic.sh[167]: 12386 Abort(coredump)
=========
We are getting the following exceptions with oci driver
java.sql.SQLException: ORA-08177: can't serialize access for
this transaction
at
oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at
oracle.jdbc.oci8.OCIDBAccess.check_error(OCIDBAccess.java:1597)
at
oracle.jdbc.oci8.OCIDBAccess.executeFetch(OCIDBAccess.java:1209)
at
oracle.jdbc.oci8.OCIDBAccess.parseExecuteFetch(OCIDBAccess.java:1321)
at
oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:1446
at
oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:1371)
>
============
Any help or suggestion will be appreciated.
rgds
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