RAC instance connection

DB:11.2.0.1
OS:Linux
RAC:11.2.0.2
how to check to which instance i am getting connected to in a RAC setup.

user13549752 wrote:
DB:11.2.0.1
OS:Linux
RAC:11.2.0.2
how to check to which instance i am getting connected to in a RAC setup.select machine from v$session where sid =1;

Similar Messages

  • Max Connections to Oracle 10g RAC Instance

    Hi,
    We have IBM Websphere Application Server on one unix server which is connecting to a Oracle 10g RAC Instance which is on a different unix server through JDBC connection. They(Application Team) are doing stress tests, please tell me how many connections can a Oracle Database Allow simultaneously. They tested for 2000 connections simultaneously. It failed...This is urgent, they are on call please reply ASAP
    Thanks,

    Use Oracle Shared Server (the default is Dedicated Server),
    I've shown JBOSS app developers how a little Dell desktop (256MB RAM, 1.7Ghz P4) can accept a 1000 app server connections (using Shared Server). While a big HP-UX server failed to accept 200 connections (using Dedicated Server).
    Oracle RAC should easily be able to handle 100+ concurrent client OLTP connections per RAC node using Shared Server - assuming that each of the concurrent sessions are actually doing stuff and not just sitting there idle. (if 99.99% of the connections are idle, then even a little desktop Oracle database can handle well over a 1000)
    Bottomline - you must have your primary focus and expertise on Oracle. On the the data tier. Not the app tier. The data tier is what scales the app tier. Not vice versa. Adding an extra app tier server does not enable the data tier platform to suddenly be able to run more SQLs, The app tier does not scale the data tier.
    If you want performance and scalability, you must get the data tier right. App tier be damned as that is neither here nor there ito performance and scalability. This means Oracle expertise is required first and foremost.

  • Cleint tnsnames.ora  for connecting to RAC instance

    Dear all,
    DB:10.2.0.1
    o/s:redhat 5.6
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    cleint tnsname.ora
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    Try to connect straight to the nodes. One node at the time. You can add new tnsnames entries for all RAC nodes so you can connect only one node not the whole RAC.
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    Edited by: Simo Kemppinen on Jul 15, 2012 12:59 PM

  • Oracle RAC instance related

    We have Oracle Databases 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production running on Linux x86 64-bit
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    Copyright (c) 1991, 2009, Oracle.  All rights reserved.
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    Start Date                15-NOV-2010 13:33:49
    Uptime                    4 days 1 hr. 0 min. 44 sec
    Trace Level               off
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    Listener Log File         /opt/app/oracle/diag/tnslsnr/node2/listener/alert/log.xml
    Listening Endpoints Summary...
      (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
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    Service "db1" has 2 instance(s).
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    Service "db2" has 2 instance(s).
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      Instance "db22", status READY, has 2 handler(s) for this service...
    Service "db3" has 2 instance(s).
      Instance "db31", status READY, has 1 handler(s) for this service...
      Instance "db32", status READY, has 2 handler(s) for this service...
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    Copyright (c) 1991, 2009, Oracle.  All rights reserved.
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    Alias                     LISTENER
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    Uptime                    0 days 11 hr. 21 min. 1 sec
    Trace Level               off
    Security                  ON: Local OS Authentication
    SNMP                      OFF
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    Listener Log File         /opt/app/oracle/diag/tnslsnr/node1/listener/alert/log.xml
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  • Rac Instance Crashes

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    2013-03-22 22:30:05.644000 -07:00
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    2013-03-22 22:31:08.734000 -07:00
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    Dumping diagnostic data in directory=[cdmp_20130322223113], requested by (instance=2, osid=27427 (LMS0)), summary=[abnormal instance termination].
    ORA-1092 : opitsk aborting process
    Instance terminated by LMS0, pid = 27427

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  • Can't we start a RAC instance without local pfile ?

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  • How to determine which RAC-instance the appl. is logged onto?

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  • RAC instance, trying to recover UNDO datafile, RMAN gives RMAN-06054

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  • Getting error while starting the RAC instance through SRVCTL utility

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  • One of RAC instance doesnt generate awr snapshot

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