11g r2 Slow performance in windows 2008 R2

Question

Hi,
I have installed 2Node RAC on windows 2008 R2 (IBM servers) with IBM SAN storage, everything went well and oracle is working fine but with performance issue.
its Standard edition and we are using ASM for database storage.
The problem is with performance, as i know installation take cares of all basic configuration to begin with, or do i need to perform some postinstallation in windows, this is my first installation on windows.
We are facing performance issue here.
what exactly i mean is, if i do a logical import on my laptop it finishes in 10 mins but the same import takes more than 20 mins on server. This server will be used for production use in few days, so please i need some help.
Is there a way to monitor SAN usage in windows not the storage util provided by IBM.
Thanks,
Ajay Kumar

Answer 1

AEzzy wrote:
Hi Ajay
Till now you didn't provide any information about how you trace this problem.
I'll suggest if you take a snapshot before the import then one after you finish the import. after that get an ASH and AWR reports for these two snapshots.
On the other hand is the two nodes private network on a physical isolated netwrok? or so they share the public network switches?
Regards
AminHi,
I was doing couple of test, the problem is related to interconnect or RAC, if i shutdown one server then all process are fast including impdp. i tried this from both the servers by bringing down the alternative server.
Initially we had used cross-cable for interconnect, but now we are using a100MBps dedicated switch, just for testing, once this works then we will upgrade the switch to 1GBps or create VLAN in existing.
But even after having a dedicated 100MBps switch only for interconnect, same problem exists. i have taken Trace during the impdp process.
trace from dm00 file
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
wait for unread message on broadcast channel
1359 1.01 1056.87
ges message buffer allocation 511 0.00 0.00
library cache lock 20 0.00 0.00
library cache pin 22 0.00 0.00
rdbms ipc reply 19 0.00 0.00
enq: PS - contention 181 0.00 0.07
PX Deq: reap credit 3010 0.00 0.02
PX Deq: Join ACK 270 0.00 0.39
PX Deq: Parse Reply 271 2.52 7.16
PX Deq: Execute Reply 181 0.00 0.03
reliable message 552 0.12 0.33
PX Deq: Signal ACK RSG 270 0.01 0.15
asynch descriptor resize 44 0.00 0.00
PX Deq: Signal ACK EXT 120 0.04 0.05
IPC send completion sync 135 0.00 0.00
PX Deq: Slave Session Stats 270 0.00 0.30
row cache lock 35 0.00 0.00
db file sequential read 1 0.51 0.51
latch: ges resource hash list 3 0.00 0.00
latch: shared pool 2 0.00 0.00
90 user SQL statements in session.
2022 internal SQL statements in session.
2112 SQL statements in session.
Trace file: slrhprod1_dm00_5208.trc
Trace file compatibility: 10.01.00
Sort options: default
1 session in tracefile.
90 user SQL statements in trace file.
2022 internal SQL statements in trace file.
2112 SQL statements in trace file.
45 unique SQL statements in trace file.
28261 lines in trace file.
4218 elapsed seconds in trace file.
Thanks,
Ajay