Failover time using BFD

Hi Champs,
we have configured BFD in multihoming scenario with BGP routing protocol.Timer configuration is bfd interval 100 min_rx 100 multiplier 5.
Failover from first ISP to second ISP takes 30 sec and same from first ISP to second ISP takes more than 1min. Can you suggest reason for different failver times and how can i have equal failover time from both ISP.How convergence time is calculated in BGP + BFD scenario?
Regards
V

Vicky,
A simple topology would help better understand the scenario. Do you have both the ISP terminated on same router or different router?.
How many prefixes are you learning?. Full internet table or few prefixes?.
Accordingly, you can consider BGP PIC or best external to speed up the convergence.
-Nagendra

Similar Messages

Failover time.

hi,
          I have got a problem with failover time.
          My environment,
          One cluster: two weblogic servers5.1 sp4s running on Sun Solaris. The
          cluster uses In-memory replication.
          Web Server is Apache running on Sun solaris. Apache bridge is setup
          with weblogic.conf reads:
          WeblogicCluster 10.2.2.20:7001,10.2.2.21:7001
          ConnectTimeoutSecs 10
          ConnectRetrySecs 5
          StatPath true
          HungServerRecoverSecs 30:100:120
          Everything is starting fine. Both weblogic server says Joins the
          cluster....and application is working fine. When one weblogic server is
          forced to shutdown, failover takes place fine.
          The problem occurs when the machine, that has first entry in
          weblogic.conf file( 10.2.2.20 )running weblogic server is unplugged from
          the network, failover takes after three minutes.
          Could someone help me how to reduce this time. Is there any property
          that has to be set in the weblogic.conf or in weblogic.properties file
          that need to be set.
          Thanks in Advance
          Arun


arunbabu wrote:
          > hi,
          > I have got a problem with failover time.
          > My environment,
          > One cluster: two weblogic servers5.1 sp4s running on Sun Solaris. The
          > cluster uses In-memory replication.
          > Web Server is Apache running on Sun solaris. Apache bridge is setup
          > with weblogic.conf reads:
          >
          > WeblogicCluster 10.2.2.20:7001,10.2.2.21:7001
          > ConnectTimeoutSecs 10
          > ConnectRetrySecs 5
          > StatPath true
          > HungServerRecoverSecs 30:100:120
          >
          > Everything is starting fine. Both weblogic server says Joins the
          > cluster....and application is working fine. When one weblogic server is
          > forced to shutdown, failover takes place fine.
          > The problem occurs when the machine, that has first entry in
          > weblogic.conf file( 10.2.2.20 )running weblogic server is unplugged from
          > the network, failover takes after three minutes.
          > Could someone help me how to reduce this time. Is there any property
          > that has to be set in the weblogic.conf or in weblogic.properties file
          > that need to be set.
          HungServerRecoverSecs seconds
          This implementation takes care of the hung or unresponsive servers in
          the cluster. The plug-in waits for HungServerRecoverSecs for the server to
          respond and then declares that server dead, failing over to the next server.
          The minimum value for this setting is 10 and the maximum value is 600. The
          default is set at 300. It should be set to a very large value. If it is less
          than the time the servlets take to process, then you will see unexpected
          results.
          Try reducing hungserver recover seconds. But remember if you application
          processing takes long time then you will in trouble since the plugin will be
          failing over to other servers in the cluster and you will be thrashing the
          servers.
          - Prasad
          >
          > Thanks in Advance
          > Arun
          Cheers
          - Prasad

What are typical failover times for application X on Sun Cluster

Our company does not yet have any hands-on experience with clustering anything on Solaris, although we do with Veritas and Miscrosoft. My experience with MS is that it is as close to seemless (instantaneous) as possible. The Veritas clustering takes a little bit longer to activate the standby's. A new application we are bringing in house soon runs on Sun cluster (it is some BEA Tuxedo/WebLogic/Oracle monster). They claim the time it takes to flip from the active node to the standby node is ~30minutes. This to us seems a bit insane since they are calling this "HA". Is this type of failover time typical in Sun land? Thanks for any numbers or reference.

This is a hard question to answer because it depends on the cluster agent/application.
On one hand you may have a simple Sun Cluster application that fails over in seconds because it has to do a limited amount of work (umount here, mount there, plumb network interface, etc) to actually failover.
On the other hand these operations may, depending on the application, take longer than another application due to the very nature of that application.
An Apache web server failover may take 10-15 seconds but an Oracle failover may take longer. There are many variables that control what happens from the time that a node failure is detected to the time that an application appears on another cluster node.
If the failover time is 30 minutes I would ask your vendor why that is exactly.
Not in a confrontational way but a 'I don't get how this is high availability' since the assumption is that up to 30 minutes could elapse from the time that your application goes down to it coming back on another node.
A better solution might be a different application vendor (I know, I know) or a scalable application that can run on more than one cluster node at a time.
The logic with the scalable approach is that if a failover takes 30 minutes or so to complete it (failover) becomes an expensive operation so I would rather that my application can use multiple nodes at once rather than eat a 30 minute failover if one node dies in a two node cluster:
serverA > 30 minute failover > serverB
seems to be less desirable than
serverA, serverB, serverC, etc concurrently providing access to the application so that failover only happens when we get down to a handful of nodes
Either one is probably more desirable than having an application outage(?)

HA nfs failover time? [SC3.1 2005Q4]

Just build a test cluster to play with for a project (a v210, a v240 and a 3310). All appears to be working fine and we have a couple of NFS services running on it. One question however :-)
How long should it take to failover a simple NFS resource group? It's currently taking something like 1min45secs to failover and the scswitch command doesn't return for over 4min30secs. Is that normal (it probably is I just thought NFS would migrate faster than this for some reason :)).
Also, why does the scswitch command take so much longer to return - the service has failed over and started fine yes it still takes a couple more mins to return a prompt. Is it waiting for sucessful probes or something (which I guess makes sense...)
cheers,
Darren

Failing over from one machine (dev-v210) to the other (dev-v240):
Aug 1 11:31:59 dev-v210 Cluster.RGM.rgmd: [ID 529407 daemon.notice] resource group nfs-rg1 state on node dev-v210 change to RG_PENDING_OFFLINE
Aug 1 11:31:59 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-res state on node dev-v210 change to R_MON_STOPPING
Aug 1 11:31:59 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-hastorageplus-res state on node dev-v210 change to R_MON_STOPPING
Aug 1 11:31:59 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-hafoip-res state on node dev-v210 change to R_MON_STOPPING
Aug 1 11:31:59 dev-v210 Cluster.RGM.rgmd: [ID 707948 daemon.notice] launching method <hafoip_monitor_stop> for resource <nfs1-hafoip-res>, resource group <nfs-rg1>, timeout <300> seconds
Aug 1 11:31:59 dev-v210 Cluster.RGM.rgmd: [ID 707948 daemon.notice] launching method <hastorageplus_monitor_stop> for resource <nfs1-hastorageplus-res>, resource group <nfs-rg1>, timeout <90> seconds
Aug 1 11:31:59 dev-v210 Cluster.RGM.rgmd: [ID 707948 daemon.notice] launching method <nfs_monitor_stop> for resource <nfs1-res>, resource group <nfs-rg1>, timeout <300> seconds
Aug 1 11:31:59 dev-v210 Cluster.RGM.rgmd: [ID 736390 daemon.notice] method <hastorageplus_monitor_stop> completed successfully for resource <nfs1-hastorageplus-res>, resource group <nfs-rg1>, time used: 0% of timeout <90 seconds>
Aug 1 11:31:59 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-hastorageplus-res state on node dev-v210 change to R_ONLINE_UNMON
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 736390 daemon.notice] method <hafoip_monitor_stop> completed successfully for resource <nfs1-hafoip-res>, resource group <nfs-rg1>, time used: 0% of timeout <300 seconds>
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-hafoip-res state on node dev-v210 change to R_ONLINE_UNMON
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 736390 daemon.notice] method <nfs_monitor_stop> completed successfully for resource <nfs1-res>, resource group <nfs-rg1>, time used: 0% of timeout <300 seconds>
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-res state on node dev-v210 change to R_ONLINE_UNMON
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-res state on node dev-v210 change to R_STOPPING
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 707948 daemon.notice] launching method <nfs_svc_stop> for resource <nfs1-res>, resource group <nfs-rg1>, timeout <300> seconds
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 784560 daemon.notice] resource nfs1-res status on node dev-v210 change to R_FM_UNKNOWN
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 922363 daemon.notice] resource nfs1-res status msg on node dev-v210 change to <Stopping>
Aug 1 11:32:00 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_svc_stop]: [ID 584207 daemon.notice] Stopping nfsd and mountd.
Aug 1 11:32:00 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_svc_stop]: [ID 948424 daemon.notice] Stopping NFS daemon /usr/lib/nfs/mountd.
Aug 1 11:32:00 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_svc_stop]: [ID 948424 daemon.notice] Stopping NFS daemon /usr/lib/nfs/nfsd.
Aug 1 11:32:00 dev-v210 nfssrv: [ID 624069 kern.notice] NOTICE: nfs_server: server is now quiesced; NFSv4 state has been preserved
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 736390 daemon.notice] method <nfs_svc_stop> completed successfully for resource <nfs1-res>, resource group <nfs-rg1>, time used: 0% of timeout <300 seconds>
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-res state on node dev-v210 change to R_STOPPED
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-hastorageplus-res state on node dev-v210 change to R_STOPPING
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 707948 daemon.notice] launching method <hastorageplus_stop> for resource <nfs1-hastorageplus-res>, resource group <nfs-rg1>, timeout <1800> seconds
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 784560 daemon.notice] resource nfs1-hastorageplus-res status on node dev-v210 change to R_FM_UNKNOWN
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 922363 daemon.notice] resource nfs1-hastorageplus-res status msg on node dev-v210 change to <Stopping>
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 736390 daemon.notice] method <hastorageplus_stop> completed successfully for resource <nfs1-hastorageplus-res>, resource group <nfs-rg1>, time used: 0% of timeout <1800 seconds>
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-hastorageplus-res state on node dev-v210 change to R_STOPPED
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-hafoip-res state on node dev-v210 change to R_STOPPING
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 784560 daemon.notice] resource nfs1-hafoip-res status on node dev-v210 change to R_FM_UNKNOWN
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 922363 daemon.notice] resource nfs1-hafoip-res status msg on node dev-v210 change to <Stopping>
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 707948 daemon.notice] launching method <hafoip_stop> for resource <nfs1-hafoip-res>, resource group <nfs-rg1>, timeout <300> seconds
Aug 1 11:32:00 dev-v210 ip: [ID 678092 kern.notice] TCP_IOC_ABORT_CONN: local = 129.012.020.137:0, remote = 000.000.000.000:0, start = -2, end = 6
Aug 1 11:32:00 dev-v210 ip: [ID 302654 kern.notice] TCP_IOC_ABORT_CONN: aborted 0 connection
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 784560 daemon.notice] resource nfs1-hafoip-res status on node dev-v210 change to R_FM_OFFLINE
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 922363 daemon.notice] resource nfs1-hafoip-res status msg on node dev-v210 change to <LogicalHostname offline.>
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 736390 daemon.notice] method <hafoip_stop> completed successfully for resource <nfs1-hafoip-res>, resource group <nfs-rg1>, time used: 0% of timeout <300 seconds>
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-hafoip-res state on node dev-v210 change to R_OFFLINE
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-res state on node dev-v210 change to R_POSTNET_STOPPING
Aug 1 11:32:00 dev-v210 Cluster.RGM.rgmd: [ID 707948 daemon.notice] launching method <nfs_postnet_stop> for resource <nfs1-res>, resource group <nfs-rg1>, timeout <300> seconds
Aug 1 11:32:00 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 584207 daemon.notice] Stopping lockd and statd.
Aug 1 11:32:00 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 948424 daemon.notice] Stopping NFS daemon /usr/lib/nfs/lockd.
Aug 1 11:32:01 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 948424 daemon.notice] Stopping NFS daemon /usr/lib/nfs/statd.
Aug 1 11:32:01 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 530938 daemon.notice] Starting NFS daemon /usr/lib/nfs/statd.
Aug 1 11:33:51 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 906922 daemon.notice] Started NFS daemon /usr/lib/nfs/statd.
Aug 1 11:33:51 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 530938 daemon.notice] Starting NFS daemon /usr/lib/nfs/lockd.
Aug 1 11:33:51 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 906922 daemon.notice] Started NFS daemon /usr/lib/nfs/lockd.
Aug 1 11:33:51 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 530938 daemon.notice] Starting NFS daemon /usr/lib/nfs/mountd.
Aug 1 11:33:51 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 906922 daemon.notice] Started NFS daemon /usr/lib/nfs/mountd.
Aug 1 11:33:51 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 530938 daemon.notice] Starting NFS daemon /usr/lib/nfs/nfsd.
Aug 1 11:33:51 dev-v210 nfssrv: [ID 760318 kern.notice] NOTICE: nfs_server: server was previously quiesced; existing NFSv4 state will be re-usedAug 1 11:33:51 dev-v210 SC[SUNW.nfs:3.1,nfs-rg1,nfs1-res,nfs_postnet_stop]: [ID 906922 daemon.notice] Started NFS daemon /usr/lib/nfs/nfsd.
Aug 1 11:33:51 dev-v210 Cluster.RGM.rgmd: [ID 784560 daemon.notice] resource nfs1-res status on node dev-v210 change to R_FM_OFFLINE
Aug 1 11:33:51 dev-v210 Cluster.RGM.rgmd: [ID 922363 daemon.notice] resource nfs1-res status msg on node dev-v210 change to <Completed successfully.>
Aug 1 11:33:51 dev-v210 Cluster.RGM.rgmd: [ID 736390 daemon.notice] method <nfs_postnet_stop> completed successfully for resource <nfs1-res>, resource group <nfs-rg1>, time used: 36% of timeout <300 seconds>
Aug 1 11:33:51 dev-v210 Cluster.RGM.rgmd: [ID 443746 daemon.notice] resource nfs1-res state on node dev-v210 change to R_OFFLINE
The delay seems come with "Starting NFS daemon /usr/lib/nfs/statd." It appears to stop it and then start it again - and the starting takes a couple of mins.
When the other node starts it up again we see a similar thing - starting statd takes a couple of mins.
Other than that it works fine - it feels like statd blocks on some sort of timeout?...
Would be good to get this failing over faster if possible!
Uname reports "SunOS dev-v210 5.10 Generic_118833-17 sun4u sparc SUNW,Sun-Fire-V210". Not using veritas VM at all - this is all SVM on these machines.
Darren

RAC Active Active cluster failover time

Hi,
In a RAC active active cluster , how long does it take to failover to the surviving instance.
As per the docu I understand that rollback is done just for the select statements and not others. Is that correct?

RAC is an active-active cluster situation by design.
A failover from a session from a stopped/crashed instance to a surviving one can be implemented in several ways.
The most common way to do failover is using TAF, Transparent Application Failover, which is implemented on the client (using settings in the tnsnames.ora file)
When an instance of a RAC cluster is crashed, the surviving instances (actually the voted master instance) will detect an instance is crashed, and recover the crashed instance using its online redologfiles. Current transactions in that instance will be rolled back. The time it will take is depended on activity in the database, thus the amount to recover.

2540 / RDAC path failover time

Hi,
I have a RHEL 5.3 server with two single port HBAs. These connect to a Brocade 300 switch and are zoned to two controllers on a 2540. Each HBA is zoned to see each controller. RDAC is used as the multipathing driver.
When testing the solution, if I pull the cable from the active path between the HBA and the switch, it takes 60 seconds before the path fails over to the second HBA. No controller failover is taking place on the array - the path already exists through the brocade between the preferred array controller and the second HBA. After 60 seconds disk I/O continues to the original controller.
Is this normal ? Is there a way of reducing the failover time ? I had a look at the /etc/mpp.conf variables but there is nothing obvious there that is causing this delay.
Thanks

Thanks Hugh,
I forgot to mention that we were using Qlogic HBAs so our issue was a bit different...
To resolve our problem; since we had 2x2FC HBA cards in each server we needed to configure zoning on the brocade switch to ensure that each HBA port only saw one of the two array controllers (previously both controllers were visable to each HBA port - which was breaking some RDAC rule). Also we upgraded the qlogic drivers using qlinstall -i before installing RDAC (QLogic drivers which come with RHEL5.3 are pretty old it seems).
Anyway, after these changes path failovers were working as expected and our timeout value of 60sec for Oracle ocfs2 cluster was not exceeded.
We actually ended up having to increase the ocfs2 timeout from 60 to 120 seconds because another test case failed - it was taking more than 60sec for a controller to failover (simulated by placing active controller offline from the service advisor). We are not sure if this time is expected or not... anyway have a service request open for this.
Thanks again,
Trev

Query to find out the time used by an user for an application

Hello All,
I want to know the query to find out the whole time used by the user for an application. Please view the below data
Employee:
SNO EMP_ID EMP_NAME EMP_DATE LOGIN_TIME LOGOUT_TIME
1 10 Visu 21-Nov-2010 06:30:00 07:30:00
2 10 Visu 21-Nov-2010 06:40:00 07:20:00
3 10 Visu 21-Nov-2010 06:50:00 07:50:00
4 10 Visu 21-Nov-2010 07:30:00 08:30:00
5 10 Visu 21-Nov-2010 09:30:00 10:30:00
By checking the above data we can say that the total time Visu used the application is
8.30 - 6.30 (From 1,2,3,4 records) = 2hrs
10.30 - 9.30 (Based on 5th rec) = 1hr
So the total time Visu used the application would be 3 hrs = 180 mins.
Could you please help me in getting the result from that data using a query?

odie_63 wrote:
I think it may be solved with analytics too.
with t1 as (
            select 1 sno,10 emp_id,'Visu' emp_name,'21-Nov-2010' emp_date,'06:30:00' login_time,'07:30:00' logout_time from dual union all
            select 2,10,'Visu','21-Nov-2010','06:40:00','07:20:00' from dual union all
            select 3,10,'Visu','21-Nov-2010','06:50:00','07:50:00' from dual union all
            select 4,10,'Visu','21-Nov-2010','07:30:00','08:30:00' from dual union all
            select 5,10,'Visu','21-Nov-2010','09:30:00','10:30:00' from dual
     t2 as (
            select emp_id,
                    emp_name,
                    emp_date,
                    to_date(emp_date || login_time,'DD-MON-YYYYHH24:MI:SS') login_time,
                    to_date(emp_date || logout_time,'DD-MON-YYYYHH24:MI:SS') logout_time
              from t1
     t3 as (
            select t2.*,
                    case
                      when login_time < max(logout_time) over(
                                                              partition by emp_id,emp_date
                                                              order by login_time
                                                              rows between unbounded preceding
                                                                       and 1 preceding
                        then 0
                      else 1
                    end start_of_group
              from t2
     t4 as (
            select t3.*,
                    sum(start_of_group) over(partition by emp_id,emp_date order by login_time) grp
              from t3
     t5 as (
            select emp_id,
                    emp_date,
                    min(login_time) login_time,
                    max(logout_time) logout_time
              from t4
              group by emp_id,
                       emp_date,
                       grp
select emp_id,
        numtodsinterval(sum(logout_time - login_time),'day') time_spent
from t5
group by emp_id
order by emp_id
    EMP_ID TIME_SPENT
        10 +000000000 03:00:00.000000000
SQL> SY.

Unable to capture the Citrix network response time using OATS Load testing.

Unable to capture the Citrix network response time using OATS Load testing. Here is the scenario " in our project users logs into Citrix network and select the Hyperion application and does the Transaction and the Clients wants us to simulate the same scenario for load testing. We have scripted starting from Citrix Login and then launching Hyperion application. But the time taken to launch the Hyperion Application from Citrix network has not been captured whereas Hyperion Transaction time have been recorded. Can any help to resolve this issue ASAP?

Hi keerthi,
1. I have pasted the code for the first issue
web
                         .button(
                                   122,
                                   "/web:window[@index='0' or @title='Manage Network Targets - Oracle Communications Order and Service Management - Order and Service Management']/web:document[@index='0' or @name='1824fhkchs_6']/web:form[@id='pt1:_UISform1' or @name='pt1:_UISform1' or @index='0']/web:button[@id='pt1:MA:0:n1:1:pt1:qryId1::search' or @value='Search' or @index='3']")
                         .click();
                    adf
                    .table(
                              "/web:window[@index='0' or @title='Manage Network Targets - Oracle Communications Order and Service Management - Order and Service Management']/web:document[@index='0' or @name='1c9nk1ryzv_6']/web:ADFTable[@absoluteLocator='pt1:MA:n1:pt1:pnlcltn:resId1']")
                    .columnSort("Ascending", "Name" );
     }

What is the real time use of implicit and explicit cursors in pl/sql

what is the real time use of implicit and explicit cursors in pl/sql.............please tell me

You can check the following link ->
http://www.smart-soft.co.uk/Oracle/oracle-plsql-tutorial-part5.htm
But, i've a question ->
Are you student?
Regards.
Satyaki De.

I want to Connect my Mac Mini as a Slave to a Mac pro Server while at the same time using the Mac mini's thunderbolt ports peripherals ( ie monitor, Sound Card, Hard drives) Creating a poor man's new mac Pro. Can this be Done?

I want to Connect my Mac Mini as a Slave to a Mac pro Server while at the same time using the Mac mini's thunderbolt ports peripherals ( ie monitor, Sound Card, Hard drives) Creating a poor man's new mac Pro. Can this be Done?

Well, I really would love the new unreleased mac pro however , I'm not sure of the expected cost , Everyone speculates from $3,000 to $8,000, in which I may have to wait a while to purchase.
To the point .... I want fully functional thunderbolt ports to be on the current mac pro's .... wonder if anyone had workarounds yet?... or could I chain the the current mac pro to a mac mini to make that happen?

How do I read multiple channels at one time using labview with the Fluke Hydra Data Bucket 2620a using serial port?

I need to take a reading of 15 channels about once a second. I can read one value at a time using the monitor function on the read values.vi driver, but this takes forever to read all the channels.

I don't have this instrument but I took a look at the instrument driver and it appears that you can only configure one channel at a time to read from. You might want to take a look at the command set for this instrument and see if it allows for configuration of multiple channels. It could be that the instrument driver just doesn't have that built in.
J.R. Allen

Is there a way to transfer the iTunes application to my PC using my iPhone? My PC has no means of connecting to the Internet and I do not wish to pay for Internet tethering for a one time use.

Is there a way to transfer the iTunes application to my PC using my iPhone? My PC has no means of connecting to the Internet and I do not wish to pay for Internet tethering for a one time use. I don't have the app on my computer and I simply wish to have it on there to actually be able to transfer my files.

You can transfer the app to your PC to save it, the article below will show you how:
iTunes Store: Transferring purchases from your iOS device

How to run multi reports at a time using button

dear all
i have a button on form, that call a report abc.rep. when i press the button report is displayed. now i want to show another view of that report when i press button second time. but it doesn't appear. when i close the first report that it gets run.
how can i run same report multiple time using this button.
regards.
Asif iqbal
Software Engineer
(Karachi, Pakistan).

HI
Call you report using this code then you can run more then 1 report at the same time
declare
AppID PLS_INTEGER;
begin
AppID := DDE.App_Begin('RWRUN60 module=d:\reports\LEDGER_NEW.Rep userid='||:global.the_username||'/'||:global.the_password||'@'||:global.the_Connect||' maximize=yes user_id='||:global.the_username||' user_password='||:global.the_password||' user_connect='||:global.the_connect, DDE.App_Mode_Maximized);
end;
Rizwan
www.rizwanshafiq.blogspot.com

Possible to send the 50,000 records at a time using proxy?

Hi All,
I am using the proxy to send the data form SAP to PI and then send it to Receciver by using JMS. Here i have a small issue.... is it possible to send the 50,000 records at a time using proxy? If not please suggest me how can i send bulk of records through proxy?
Thanks
Karthik.

is it possible to send the 50,000 records at a time using proxy? If not please suggest me how
can i send bulk of records through proxy?
you can try this in steps...do not go for a BigBang testing :)....check how much your XI system can handle at a time...then you may need to tune the system parameters to accomodate more message size.....how to do this??...check the below document..section 3.9.2 (Special Cases)
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/2016a0b1-1780-2b10-97bd-be3ac62214c7
Regards,
Abhishek.

New Discussions: for day time use only? (-: A darker blue, please!

Thanks a lot Mods for your efforts.
I spend some time on these boards every day, so I can see things are going better and better.
I like the new Discussions better than the previous, especially everything that comes with this new ability to put much more on one page (like being able to see A LOT (not only five) of "Recent topics in this category", or that the topic's titles can be longuer than before, or being able to read the whole thread without jumping to "the next 15 posts" like before. I set "My Posts" to "50", this too was not possible before. Etc.)
Now my request:
At first I thought, like many others, that the "blue dot" and the "blue half-dot" were too small, and that we couldn't see the small grey "New!" because it was not red.
Now after all this time since Nov14, I finally understood what was wrong, because
(1) the new kind of eye fatigue I didn't experienced before, and
(2) a change in my computer's room lighting configuration.
The real problem is not the blue dot size (altough I'm sure if it was a square it would work better), it is its environment.
We have a white line after a light blue line, and this is a great feature to differenciate between topics. Works great within a thread too, to differenciate posts.
But one side effect of this is that the whole page "feels" slightly blue.
I'm not sure, but a human eye physicist could perhaps explain another kind of (more insidious?) side effect caused by the alternance of lines. Perhaps depending on which color are chosen for them?
Anyway, there is no problem with a page that "feels" blue, when the text is black.
The problem starts when the text ALSO is blue. Especially light blue...
I find the text blue color too light. Even the "visited link" purple is too light.
Given that the background is blueish, I mean. Otherwise it'd be fine.
This was not easy to understand, because the [defect/effect] is not obvious: the overall picture is nice.
But it became obvious to me when I saw that I have no problem IF I set my screen's brightess to "very bright".
New Discussions: for day time use only?
==> Please, would it be a problem (or too difficult to set perhaps?), to try a darker blue text for two or three weeks, see if we like it better? (along with a slightly darker purple for the visited links).
Thanks again for all the great work!
Axl

Hi Axl,
Some one had posted this about color,I do not remember who,sorry.
I thought it was interesting.Hopeful this color issue can be alter but deepening the colors as you & many have requested.
http://www.grc.nasa.gov/WWW/usability/colorcss.html
Good luck, Eme

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