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Operating Systems AIX IBM AIX Internal HDD vs SAN HDD and Oracle Post 302883652 by bakunin on Wednesday 15th of January 2014 12:49:37 PM
Old 01-15-2014
Quote:
Originally Posted by filosophizer
Yes, both database size are exactly same, infact it is a clone of the production environment, the min max paging space and other parameters are also same.... everything is same. DATA, DATABASE, Parameters, OS,
only difference
ORADB = Production Environment runs on P4 and Oracle is on SAN = report take 25 minutes
CloneDB = Clone Environment runs on P5 and Oracle is on internal Disks = report takes 1 hour and 15 minutes
This way it sounds more logical, because SAN disks are (in most cases) much faster than physical disks. They have usually a lot more IOPS and more throughput bandwidth, because a lot of different reasons: stripesets, caching controllers, buses with higher bandwidth, ....

Your systems seem not to have the same amount of memory at all:

Code:
root@oradb:/>vmstat -v
              4194304 memory pages
              [...]
root@clodb:/>vmstat -v
              2097152 memory pages
              [...]

Further this looks dubious:
Code:
root@oradb:/>vmstat -v
                [...]
                80406 filesystem I/Os blocked with no fsbuf
                [...]

whereas:
Code:
root@clodb:/>vmstat -v
                 [...]
                 2740 filesystem I/Os blocked with no fsbuf
                 [...]

Not the value in itself is problematic, but the huge difference. Monitor the value closely over time, if it increases heavily you have found a potential bottleneck. If it stays at this level it is perhaps an artefact of some temporary memory shortness.

Finally, the tuning parameters seem to be different (compare "maxperm" and "minperm" in the different outputs, probably others are different too). You should run "vmo -a" (and the other tuning utilities, "schedo", "ioo", "no") on both machines to investigate other differences. What good values for maxperm and minperm would be is hard to suggest because it depends heavily on the (detailed) OS version which we do not know.

Another supposition (which would have to be proven by facts) of mine is that the faster processor is not needed in the special kind of report you run and therefore contributes nothing to some faster execution, whereas the disks contribute heavily.

I hope this helps.

bakunin
 

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OCF_HEARTBEAT_ORACLE(7) 					OCF resource agents					   OCF_HEARTBEAT_ORACLE(7)

NAME
ocf_heartbeat_oracle - Manages an Oracle Database instance SYNOPSIS
oracle [start | stop | status | monitor | meta-data | validate-all] DESCRIPTION
Resource script for oracle. Manages an Oracle Database instance as an HA resource. SUPPORTED PARAMETERS
sid The Oracle SID (aka ORACLE_SID). (unique, required, string, no default) home The Oracle home directory (aka ORACLE_HOME). If not specified, then the SID along with its home should be listed in /etc/oratab. (optional, string, no default) user The Oracle owner (aka ORACLE_OWNER). If not specified, then it is set to the owner of file $ORACLE_HOME/dbs/*${ORACLE_SID}.ora. If this does not work for you, just set it explicitely. (optional, string, no default) ipcrm Sometimes IPC objects (shared memory segments and semaphores) belonging to an Oracle instance might be left behind which prevents the instance from starting. It is not easy to figure out which shared segments belong to which instance, in particular when more instances are running as same user. .sp What we use here is the "oradebug" feature and its "ipc" trace utility. It is not optimal to parse the debugging information, but I am not aware of any other way to find out about the IPC information. In case the format or wording of the trace report changes, parsing might fail. There are some precautions, however, to prevent stepping on other peoples toes. There is also a dumpinstipc option which will make us print the IPC objects which belong to the instance. Use it to see if we parse the trace file correctly. .sp Three settings are possible: .sp - none: don't mess with IPC and hope for the best (beware: you'll probably be out of luck, sooner or later) - instance: try to figure out the IPC stuff which belongs to the instance and remove only those (default; should be safe) - orauser: remove all IPC belonging to the user which runs the instance (don't use this if you run more than one instance as same user or if other apps running as this user use IPC) .sp The default setting "instance" should be safe to use, but in that case we cannot guarantee that the instance will start. In case IPC objects were already left around, because, for instance, someone mercilessly killing Oracle processes, there is no way any more to find out which IPC objects should be removed. In that case, human intervention is necessary, and probably _all_ instances running as same user will have to be stopped. The third setting, "orauser", guarantees IPC objects removal, but it does that based only on IPC objects ownership, so you should use that only if every instance runs as separate user. .sp Please report any problems. Suggestions/fixes welcome. (optional, string, default instance) clear_backupmode The clear of the backup mode of ORACLE. (optional, boolean, default false) shutdown_method How to stop Oracle is a matter of taste it seems. The default method ("checkpoint/abort") is: .sp alter system checkpoint; shutdown abort; .sp This should be the fastest safe way bring the instance down. If you find "shutdown abort" distasteful, set this attribute to "immediate" in which case we will .sp shutdown immediate; .sp If you still think that there's even better way to shutdown an Oracle instance we are willing to listen. (optional, string, default checkpoint/abort) SUPPORTED ACTIONS
This resource agent supports the following actions (operations): start Starts the resource. Suggested minimum timeout: 120. stop Stops the resource. Suggested minimum timeout: 120. status Performs a status check. Suggested minimum timeout: 5. monitor Performs a detailed status check. Suggested minimum timeout: 30. Suggested interval: 120. validate-all Performs a validation of the resource configuration. Suggested minimum timeout: 5. methods Suggested minimum timeout: 5. meta-data Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5. EXAMPLE
The following is an example configuration for a oracle resource using the crm(8) shell: primitive p_oracle ocf:heartbeat:oracle params sid=string op monitor depth="0" timeout="30" interval="120" SEE ALSO
http://www.linux-ha.org/wiki/oracle_(resource_agent) AUTHOR
Linux-HA contributors (see the resource agent source for information about individual authors) resource-agents UNKNOWN 03/09/2014 OCF_HEARTBEAT_ORACLE(7)
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