Hi,

We had an issue where our  SAP ECC system was crashing due to LWP value reaching more than 56K.
The Unix team found from dtrace logs that the segkpsize had reached limit and hence the system was crashing. As a solution, the unix team    increased the value of segkpsize : 524288 and now the lwp upper limit is around 128K. The segkpsize was earlier set to segkpsize: 262144.
4. However now that we are tracking the lwps count on the CI-DB server, we are observing that between 12:00 and 20:30, the value of lwp's peaks upto 70K  and we are concerned that it would kep increasing.
5. On checking with  ps -leafo nlwp,user,pid,args | sort -nk 1 command we are seeing around 175 to 200 oracle processes running with 258 lwp units each.

We have some Queries and concerns to investigate incase this issue reoccurs or the number of lwp increases.

1. Is there any normal acceptable value for lwp count in heavly used SAP system. Our load at the moment is

prstat 2 5 | grep lwp

Total: 698 processes, 54951 lwps, load averages: 21.83, 25.52, 24.82

Total: 698 processes, 54951 lwps, load averages: 21.83, 25.50, 24.82

Total: 698 processes, 54951 lwps, load averages: 21.82, 25.47, 24.81

Total: 698 processes, 54951 lwps, load averages: 21.87, 25.45, 24.80

Total: 698 processes, 54963 lwps, load averages: 21.94, 25.44, 24.80

2. what are the factors in SAP that control the lwps count.
3. We can identify the process running with high number of lwp is there any way to relate them to SAP process and reduce the lwps consumption.
4. is this a Solaris 10 limitation.

Any help would be appreciated.

Thanks

Ahmad Faraz

Dear Expert,

We are planing to upgrade Solaris 10 to 11 version  ,Please let me know the steps  and the known issues.

Regards,

RK

Hi,

I have installed Trex 7.1 and did the post installation. and did the necessary configuration on ABAP Engine. but still i am unable to search txt in TX: cv04n...

when i execute trexadmin.exe, I that the trex is running.

I have created all the RFC connections to My ABAP engine.

but still unable to search txt in TX: cv04n.

m i missing something,

Please help me to troubleshoot.

Thanks in advance.

Dear all, on some of our SAP Servers we got wrong values in RZ20 from data collection method CCMS_ORA_BACKUP_arch_ful_ct. from time to time. The method reported wrong values for Archiver Destination full but at that time there is till enough free space in the related filesystem oraarch.

Thanks in advance for any hint.

Kind regards

Andrea Schneider

Dear experts,

please kindly help me to solve this problem - sapinst is not starting on Solaris 10:

# ./sapinst

[==============================] / extracting...  done!

ERROR      2014-10-06 15:02:33.244 [syuxcgroup.cpp:947]

           CSyGroupImpl_getOsInfos(iastring sName, iastring sID, tSyGroupInfo& msGroupinfo)

           lib=syslib module=syslib

FSH-00006  Return value of function getgrnam(sapinst) is No child processes.

Opened sylib722.so

exe dir is /tmp/sapinst_exe.3925.1412600544

MessageLib initialized successfully.

Creating file /tmp/dev_sap_kernel_test_06_Oct_2014_15_02_27.

Removed file /tmp/dev_sap_kernel_test_06_Oct_2014_15_02_27.

Initialized SAP kernel tracing to file /tmp/dev_sap_kernel

Reading framework jslib.

Reading framework jslib done.

checking existence of account user="root" uid="0" succeeded with true.

inserted account (root, 0, USER) into the accountcache.

getgrnam set errno to : 0 (Error 0)

Account sapinst does not exist.

Return value of function getgrnam(sapinst) is Error 0.

Exception thrown near line 949 in file syuxcgroup.cpp

Stack trace:

syuxcaccmg.cpp: 382: PSyGroupInt CSyAccountMgtImpl::createGroup(iastring sName, iastring sID) const

syxxccache.cpp: 244: CSyAccountCache::getGroupImpl(name="sapinst", sid="", create=true, ISyAccountMgt::eAccountType, ISyProgressObserver* )

syuxcgroup.cpp: 193: CSyGroupImpl::CSyGroupImpl(sapinst, , bool bCreate)

syuxcgroup.cpp: 718: bool CSyUserImpl::isExistingOnOS()

syuxcgroup.cpp: 879: CSyGroupImpl_getOsInfos(iastring sName, iastring sID, tSyGroupInfo& msGroupinfo)

At line 949 file syuxcgroup.cpp

Call stack:

syuxcaccmg.cpp: 382: PSyGroupInt CSyAccountMgtImpl::createGroup(iastring sName, iastring sID) const

syxxccache.cpp: 244: CSyAccountCache::getGroupImpl(name="sapinst", sid="", create=true, ISyAccountMgt::eAccountType, ISyProgressObserver* )

syuxcgroup.cpp: 193: CSyGroupImpl::CSyGroupImpl(sapinst, , bool bCreate)

syuxcgroup.cpp: 718: bool CSyUserImpl::isExistingOnOS()

syuxcgroup.cpp: 879: CSyGroupImpl_getOsInfos(iastring sName, iastring sID, tSyGroupInfo& msGroupinfo)

Return value of function getgrnam(sapinst) is Error 0.

Failed action:  with parameters

Error number 0 error type C_ERRNO

checking existence of account group="sapinst" succeeded with false.

A child process has been started. Pid = 3972

Child process 3972 returned 0

Return value of function getgrnam(sapinst) is No child processes.

Exception thrown near line 949 in file syuxcgroup.cpp

Stack trace:

syuxcaccmg.cpp: 382: PSyGroupInt CSyAccountMgtImpl::createGroup(iastring sName, iastring sID) const

syxxccache.cpp: 244: CSyAccountCache::getGroupImpl(name="sapinst", sid="", create=true, ISyAccountMgt::eAccountType, ISyProgressObserver* )

syuxcgroup.cpp: 193: CSyGroupImpl::CSyGroupImpl(sapinst, , bool bCreate)

syuxcgroup.cpp: 782: CSyUserImpl::addToOS()

syuxcgroup.cpp: 879: CSyGroupImpl_getOsInfos(iastring sName, iastring sID, tSyGroupInfo& msGroupinfo)

At line 949 file syuxcgroup.cpp

Call stack:

syuxcaccmg.cpp: 382: PSyGroupInt CSyAccountMgtImpl::createGroup(iastring sName, iastring sID) const

syxxccache.cpp: 244: CSyAccountCache::getGroupImpl(name="sapinst", sid="", create=true, ISyAccountMgt::eAccountType, ISyProgressObserver* )

syuxcgroup.cpp: 193: CSyGroupImpl::CSyGroupImpl(sapinst, , bool bCreate)

syuxcgroup.cpp: 782: CSyUserImpl::addToOS()

syuxcgroup.cpp: 879: CSyGroupImpl_getOsInfos(iastring sName, iastring sID, tSyGroupInfo& msGroupinfo)

Return value of function getgrnam(sapinst) is No child processes.

Failed action:  with parameters

Error number 10 error type C_ERRNO

iauxsysex.c:365: child /tmp/sapinst_exe.3925.1412600544/sapinst (pid 3933) has crashed. Executable directory is /tmp/sapinst_exe.3925.1412600544. Contact Support.

iaextract.c:1097: child has signaled an exec error (-134). Keeping directory /tmp/sapinst_exe.3925.1412600544

I have asked our Solaris admins to reboot, but unfortunately it didn't solve the problem. I tried googling, but I can't find nothing.

I have also unpacked a new healthy SWPM, but it throws the same error, so I am out of ideas...

Hi Support, In our SAP environment , the SAP Application and Database system are in 2 different system with the Operating system being Oracle Solaris 10. In the SAP application server we have the following user id : Prdadm Oraprd daaadm In the database server we have the following user id : prdadm oraprd sapadm We are planning to put password expiry policy for the above users .Will the SAP System be affected if the password expires for the above user ids From the Java AS point of view will the tools like configtool, jspm and visual administrator fail to work if the password for adm is expired. Regards Tony

Hi,

We had an issue where our  SAP ECC system was crashing due to LWP value reaching more than 56K.
The Unix team found from dtrace logs that the segkpsize had reached limit and hence the system was crashing. As a solution, the unix team    increased the value of segkpsize : 524288 and now the lwp upper limit is around 128K. The segkpsize was earlier set to segkpsize: 262144.
4. However now that we are tracking the lwps count on the CI-DB server, we are observing that between 12:00 and 20:30, the value of lwp's peaks upto 70K  and we are concerned that it would kep increasing.
5. On checking with  ps -leafo nlwp,user,pid,args | sort -nk 1 command we are seeing around 175 to 200 oracle processes running with 258 lwp units each.

We have some Queries and concerns to investigate incase this issue reoccurs or the number of lwp increases.

1. Is there any normal acceptable value for lwp count in heavly used SAP system. Our load at the moment is

prstat 2 5 | grep lwp

Total: 698 processes, 54951 lwps, load averages: 21.83, 25.52, 24.82

Total: 698 processes, 54951 lwps, load averages: 21.83, 25.50, 24.82

Total: 698 processes, 54951 lwps, load averages: 21.82, 25.47, 24.81

Total: 698 processes, 54951 lwps, load averages: 21.87, 25.45, 24.80

Total: 698 processes, 54963 lwps, load averages: 21.94, 25.44, 24.80

2. what are the factors in SAP that control the lwps count.
3. We can identify the process running with high number of lwp is there any way to relate them to SAP process and reduce the lwps consumption.
4. is this a Solaris 10 limitation.

Any help would be appreciated.

Thanks

Ahmad Faraz

Hi,

after an upgrade I am experiencing the situation that when want to lock at the Log files via transaction DBACOCKPIT

  -> Jobs

    -> DBA Planning Calendar

      -> <any job in the past with logs>

        -> Tab = "Action Log"

          -> Click on "Show Action/Detail Log"

I get an error message "Error SHOW_RESULTS_BRCONNECT: Exception condition "SYSTEM_FAILURE" triggered"

Has any one of you an idea how to resolve this issue?

I attached some screenshots, maybe this helps to clarify.

Hi All,

We are scheduling Backup using DB13 but its throwing errors

Please find the attached screenshot.

Any help appreciated...

Regards,

Videesh

Hi,

I have installed Trex 7.1 and did the post installation. and did the necessary configuration on ABAP Engine. but still i am unable to search txt in TX: cv04n...

when i execute trexadmin.exe, I that the trex is running.

I have created all the RFC connections to My ABAP engine.

but still unable to search txt in TX: cv04n.

m i missing something,

Please help me to troubleshoot.

Thanks in advance.

Dear All.,

We split the java system from dual stack and now we are trying to import the java in same host with different DBSID , When create new database phase in sapinst its encountered with the below issue . I have attached the log while kindly help us on this.

Error: ORA -12547 :TNS Lost Contact

Regards,

R.K

Hello,

I decided to open this thread in way to find some advices, concerns, in doing a SAP Kernel Update activity in a Solaris platform with Oracle DB (11.2g). I already did a lot of SAP Kernel Updates in other platforms, like Windows or Linux (RHEL) and now I need to update a SAP Kernel in Solaris platform. I would know if the process of doing this activity is the same like in Linux platforms, for instance, after the substitution/replacement of all kernel files to the new ones, is necessary to run (as 'root') the ./saproot.sh <SID> inside the /sapmnt/<SID>/exe path?!

Can you give more recommendations please?!

Thank you in advance,

samid

hi experts,

we have a need that we want to alllow multiple login in sap to more than 100 users who share their logins, as we add the users to

login/multi_login_users only it takes 256 characters, adding more than this value does not come to effect.

kindly help..

thanks in advance

Regards

Bishwanath Kanjilal

Dear Experts,

I am having the following error:

% brconnect -u // -c -f stats -t system_stats

BR0801I BRCONNECT 7.40 (15)

BR0805I Start of BRCONNECT processing: ceqivrcc.sta 2015-04-23 17:06:10

BR0484I BRCONNECT log file: /oracle/<SID>/sapcheck/ceqivrcc.sta

BR0280I BRCONNECT time stamp: 2015-04-23 17:06:12

BR0807I Name of database instance: <SID>

BR0808I BRCONNECT action ID: ceqivrcc

BR0809I BRCONNECT function ID: sta

BR0810I BRCONNECT function: stats

BR0812I Database objects for processing: SYSTEM_STATS

BR0997I System statistics will be collected with 'NOWORKLOAD' option

BR0126I Unattended mode active - no operator confirmation required

BR0280I BRCONNECT time stamp: 2015-04-23 17:06:12

BR0992I Starting collection of system statistics with option/interval NOWORKLOAD ...

BR0280I BRCONNECT time stamp: 2015-04-23 17:10:01

BR0301E SQL error -20000 at location stats_system_collect-4, SQL statement:

'BEGIN DBMS_STATS.GATHER_SYSTEM_STATS (GATHERING_MODE => 'NOWORKLOAD'); END;'

ORA-20000: Unable to gather system statistics : insufficient privileges

ORA-06512: at "SYS.DBMS_STATS", line 39666

ORA-06512: at line 1

BR0994E Collection of system statistics failed

BR0806I End of BRCONNECT processing: ceqivrcc.sta 2015-04-23 17:10:01

BR0280I BRCONNECT time stamp: 2015-04-23 17:10:01

BR0804I BRCONNECT terminated with errors

With / it is working fine. Please help !!

Hello,

I´m doing an update of Oracle Instant Client (note 819829 - Oracle Instant Client Installation and Configuration on Unix) from the version 10.2.0.2 to 11.2.0.2 in a Solaris v10 (5.10 SPARC) and for this activity, I need to change/set the environment variable LD_LIBRARY_PATH to add the new location of the new oracle client path! But that´s the point here... I need some help from you because I don´t know how to set an environment variable in a Solaris operation system, I thought that was with the command setenv or export, like this:

setenv LD_LIBRARY_PATH=/usr/sap/AZQ/SYS/exe/run:/usr/sap/AZQ/SYS/exe/uc/sun_64:/oracle/client/11x_64/instantclient

export LD_LIBRARY_PATH=/usr/sap/AZQ/SYS/exe/run:/usr/sap/AZQ/SYS/exe/uc/sun_64:/oracle/client/11x_64/instantclient

But none of them worked!

Can you tell me please how can I set a environment variable in Solaris 10 platform?

And other question... how can I set this environment variable permanent in Solaris 10? Which user file(s) I must edit/change and what I must add on it?

Thank you,

samid raif

Dear Team,

We are importing our  java system into our existing Abap system environment with the new DB SID, While creating database instance on sapinst phase.

The oracle db was dropped and it encountered with the error as below, Attached the log file kindly help us on this issue.

We have cross verified the permissions as well. everything looks fine.

ERROR:

ORA-12547: TNS:lost contact

Regards,

RK

Hi Support, In our SAP environment , the SAP Application and Database system are in 2 different system with the Operating system being Oracle Solaris 10. In the SAP application server we have the following user id : Prdadm Oraprd daaadm In the database server we have the following user id : prdadm oraprd sapadm We are planning to put password expiry policy for the above users .Will the SAP System be affected if the password expires for the above user ids From the Java AS point of view will the tools like configtool, jspm and visual administrator fail to work if the password for adm is expired. Regards Tony

Hi,

We had an issue where our  SAP ECC system was crashing due to LWP value reaching more than 56K.
The Unix team found from dtrace logs that the segkpsize had reached limit and hence the system was crashing. As a solution, the unix team    increased the value of segkpsize : 524288 and now the lwp upper limit is around 128K. The segkpsize was earlier set to segkpsize: 262144.
4. However now that we are tracking the lwps count on the CI-DB server, we are observing that between 12:00 and 20:30, the value of lwp's peaks upto 70K  and we are concerned that it would kep increasing.
5. On checking with  ps -leafo nlwp,user,pid,args | sort -nk 1 command we are seeing around 175 to 200 oracle processes running with 258 lwp units each.

We have some Queries and concerns to investigate incase this issue reoccurs or the number of lwp increases.

1. Is there any normal acceptable value for lwp count in heavly used SAP system. Our load at the moment is

prstat 2 5 | grep lwp

Total: 698 processes, 54951 lwps, load averages: 21.83, 25.52, 24.82

Total: 698 processes, 54951 lwps, load averages: 21.83, 25.50, 24.82

Total: 698 processes, 54951 lwps, load averages: 21.82, 25.47, 24.81

Total: 698 processes, 54951 lwps, load averages: 21.87, 25.45, 24.80

Total: 698 processes, 54963 lwps, load averages: 21.94, 25.44, 24.80

2. what are the factors in SAP that control the lwps count.
3. We can identify the process running with high number of lwp is there any way to relate them to SAP process and reduce the lwps consumption.
4. is this a Solaris 10 limitation.

Any help would be appreciated.

Thanks

Ahmad Faraz

Dear Experts,

please kindly help me, I need your strong support very much !!

Currently, I am working on a unicode conversion. After deleting the source system, it became necessary to restore it.

I had taken a full consistent backup of the database with BRBACKUP, just before the export. On wednesday I have

restored this backup without ANY problems !!!

On thursday (yesterday), it became necessary to restore the system once again, due to a bug in SMIGR_CREATE_DDL

(the import was failing). So I went on to restore the very same backup, which restored successfully on wednesday !!!

So, if it restored once, it means, that the backup is 100% valid and usable!

But yesterday, the restore failed, then I tried it again and the second time it failed as well !!! Exactly at the same percentage:

BR0280I BRRESTORE time stamp: 2015-07-30 17:43:12

BR0418I 14 of 29 files restored - 263910.109 of 452940.148 MB done

BR0204I Percentage done: 58.27%, estimated end time: 19:14

BR0001I *****************************_____________________

BR0351I Restoring /oracle/<SID>/sapdata4/sysaux_1/sysaux.data1

BR0355I from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sysaux.data1 ...

BR0278E Command output of 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sysaux.data1 /oracle/<SID>/sapdata4/sysaux_1/sysaux.data1':

BR0280I BRRESTORE time stamp: 2015-07-30 17:47:02

BR0279E Return code from 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sysaux.data1 /oracle/<SID>/sapdata4/sysaux_1/sysaux.data1': 2

BR0359E Restore of /oracle/<SID>/sapdata4/sysaux_1/sysaux.data1 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sysaux.data1 failed due to previous errors

BR0359E Restore of /oracle/<SID>/sapdata4/sr3usr_1/sr3usr.data1 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl failed due to previous errors

BR0359E Restore of /oracle/<SID>/sapdata4/quest/quest_data_01.dbf from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl failed due to previous errors

BR0359E Restore of /oracle/<SID>/sapdata4/system_1/system.data1 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl failed due to previous errors

BR0359E Restore of /oracle/<SID>/121/sapbackup/cntrl<SID>.dbf from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl failed due to previous errors

BR0359E Restore of /oracle/<SID>/oraarch/<SID>arch1_2276_871464083.dbf from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl failed due to previous errors

BR0278E Command output of 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3731.data2 /oracle/<SID>/sapdata4/sr3731_2/sr3731.data2':

BR0280I BRRESTORE time stamp: 2015-07-30 17:47:03

BR0279E Return code from 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3731.data2 /oracle/<SID>/sapdata4/sr3731_2/sr3731.data2': 2

BR0359E Restore of /oracle/<SID>/sapdata4/sr3731_2/sr3731.data2 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3731.data2 failed due to previous errors

BR0359E Restore of /oracle/<SID>/sapdata4/sr3731_1/sr3731.data1 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl failed due to previous errors

BR0278E Command output of 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data10 /oracle/<SID>/sapdata2/sr3_10/sr3.data10':

BR0280I BRRESTORE time stamp: 2015-07-30 17:47:25

BR0279E Return code from 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data10 /oracle/<SID>/sapdata2/sr3_10/sr3.data10': 2

BR0359E Restore of /oracle/<SID>/sapdata2/sr3_10/sr3.data10 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data10 failed due to previous errors

BR0359E Restore of /oracle/<SID>/sapdata1/sr3_3/sr3.data3 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl failed due to previous errors

BR0359E Restore of /oracle/<SID>/sapdata1/sr3_6/sr3.data6 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl failed due to previous errors

BR0278E Command output of 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data15 /oracle/<SID>/sapdata3/sr3_15/sr3.data15':

BR0280I BRRESTORE time stamp: 2015-07-30 17:47:28

BR0279E Return code from 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data15 /oracle/<SID>/sapdata3/sr3_15/sr3.data15': 2

BR0359E Restore of /oracle/<SID>/sapdata3/sr3_15/sr3.data15 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data15 failed due to previous errors

BR0359E Restore of /oracle/<SID>/sapdata1/sr3_1/sr3.data1 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl failed due to previous errors

BR0278E Command output of 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data4 /oracle/<SID>/sapdata1/sr3_4/sr3.data4':

BR0280I BRRESTORE time stamp: 2015-07-30 17:47:32

BR0279E Return code from 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data4 /oracle/<SID>/sapdata1/sr3_4/sr3.data4': 2

BR0359E Restore of /oracle/<SID>/sapdata1/sr3_4/sr3.data4 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data4 failed due to previous errors

BR0278E Command output of 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data12 /oracle/<SID>/sapdata2/sr3_12/sr3.data12':

BR0280I BRRESTORE time stamp: 2015-07-30 17:47:33

BR0279E Return code from 'LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data12 /oracle/<SID>/sapdata2/sr3_12/sr3.data12': 2

BR0359E Restore of /oracle/<SID>/sapdata2/sr3_12/sr3.data12 from /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sr3.data12 failed due to previous errors

BR0223E Last copy process failed

BR0406I End of file restore: rerbjcmx.rsb 2015-07-30 17:47:33

BR0280I BRRESTORE time stamp: 2015-07-30 17:47:33

BR0404I BRRESTORE terminated with errors

I have run dbv against sysaux.data1 - it came back fine, stating Total Pages Failing : 0 for everything!

I have asked our storage admin to have a look at it - he didn't find nothing !!! We have executed this command:

LANG=C cp /datadomain/backup_oracle/sap_backup/<SID>/beratvvl/sysaux.data1 /oracle/<SID>/sapdata4/sysaux_1/sysaux.data1

On the OS prompt and it finished successfully (the return code was 0) !!!

So, all this is a VERY BIG mystery, ESPECIALLY bearing in mind, that this backup restored once successfully !!

I've been reviewing threads with the similar problem, but nothing was relating to my case or giving some meaningful suggestions.

Please kindly advise on how to solve this! Many thanks in advance!

Hi Colleagues,

I have a requirement to implement a High Availability for ECC on Solaris server. We are running ECC on HANA with distributed installation (ECC on Solaris, HANA on Linux). The High Availability on the HANA side is already taken care of. I would like to know the HA configuration option for the ECC. We will be installing Primary application server (CI) , ASCS, ERS and  3 Additional Application servers (Dialog instances) All of these will be installed with Virtual IPs on Solaris.I am interested in knowing about HA configuration options. As of now, Our plan is to install ASCS on node A and ERS on node B of a cluster with fail over configured for the SPOF components.We also want to configure failover for the CI and Dialog Instance, as we do not want any user sessions (work processes) to be cancelled when any of these instances fail. For this, Is it possible for me to configure Virtual IP based failover of the CI and Diolog Instances from the Production to Quality so that when the Prod failsover to QA, the QA will shutdown and be used for Prod? I would like to know how this kind of configuration works. How can QA be configured such that it can be used for QA as well as a passive node for Prod failover? I would like to know the high-level of how this process happens and how the filesystems and networks are configured for this to happen. Could you please shed some light on this topic.

Thanks!

Veera