Stopping RAC instances on shutdown (10g - RHEL3)

Any advise on the correct way to script instance stop in cluster nodes?
As soon as a node comes up, CRS automatically starts its instances. However, according to alert logs, they are not being cleanly stopped (if left as configured by the installation procedure):
Errors in file /opt/oracle/admin/oragis/bdump/oragi1_pmon_4778.trc:
ORA-00481: LMON process terminated with error
PMON: terminating instance due to error 481
Beginning crash recovery of 1 threads
In other words, on node shutdown, we need to issue
srvctl stop instance -d ... -i ...
What's the proper place to issue this command before the node shuts down?
Thanks,
Ivan

Similar Messages

RAC instance stop

Hello All,
We have a 2 node RAC. we had to stop the databases and cluster serivces for some OS maintenence activities.
One of our team mate accidentally stopped the instances with shutdown immediate. I know we will have to use SRVCTL to bring down instances down simulataneoulsy in both nodes.
Below is what he did :-
NODE 1:
shutdown immediate;
./crsctl stop crs
after node1 services came down he proceeded to NODE 2
NODE 2:
shutdown immediate
./crsctl stop crs
He said his shutdown was smooth and no issues.
My question now is, if we try to bring up the database with SRVCTL START DATABASE will it come up normally ?
unfortunately i have to wait till tomorrow to test this. so meantime thought to get advise from experts here on this
Thanks,
Mike

Yes you will be able to use srvctl to bring up the database. One thing to note unless you have disabled the the auto start of the crs or instances then everything should auto start.
If you would have shutdown the instance using srvctl then when you restart the server you crs would come up Automatically if you is enabled but the instance or database would not since you shutdown the instance with srvctl.

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.

RAC instance won't start: ORA-00443: background process "VKRM" did not star

I've logged a SR with Oracle, but while waiting for response from them...I'm stumped I can't find more out here about this article.
On Oracle knowledgebase...any search for VKRM, gives about the same 3 articles relating to RDA (Remote Diagnostic Assistant).
Not sure what went on here.
I have a 5 node RAC cluster. All other instances seem to be running just fine.
On one instance...some applications were getting an error like:
ORA-01033: ORACLE initialization or shutdown in progress
I looked in GRID...and it indicated that only two of the 5 nodes had this instance running...which was strange in that with srvctl, it showed ll 5 up and running:
[oracle@server2 bin]$ ./srvctl status database -d INSTANCE
Instance INSTANCE1 is running on node server1
Instance INSTANCE2 is running on node server2
Instance INSTANCE3 is running on node server3
Instance INSTNANCE4 is running on node server4
Instance INSTANCE5 is running on node server5
Anyway, thought I'd poke around. I started with trying to get srvctl to stop instance #2...in GRID it seemed that instance 2,4 and 5 weren't working.
srvctl stop instance -D INSTANCE -i INSTANCE2
This just hung...
I thought I'd cycle all the nodes...so, did a ctl-c out of that one, and did:
[oracle@server2 bin]$ ./srvctl stop database -d INSTANCE -o abort
PRCD-1124 : Failed to stop database INSTANCE and its services
PRCR-1065 : Failed to stop resource (((((NAME STARTS_WITH ora.instance.) && (NAME ENDS_WITH .svc)) && (TYPE == ora.service.type)) && ((STATE != OFFLINE) || (TARGET != OFFLINE))) || (((NAME == ora.instance.db) && (TYPE == ora.database.type)) && (STATE != OFFLINE)))
CRS-2675: Stop of 'ora.instance.db' on 'server5' failed
CRS-2675: Stop of 'ora.instance.db' on 'server4' failed
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
The ORA-01034 messages repeats a number of times...and the one with server4 and server5 repeated again too.
I also got this:
CRS-2680: Clean of 'ora.instance.db' on 'server2' failed
CRS-2675: Stop of 'ora.instance.db' on 'server5' failed
CRS-2675: Stop of 'ora.instance.db' on 'server4' failed
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
I get similar messages when I try to restart.
clusters seem to be up, and other instances seem to be ok
Looking at alert log...I found some strangeness in the traces
Starting background process VKRM
Errors in file /u01/app/oracle/diag/rdbms/instance/INSTANCE2/trace/INSTANCE2_dbrm_26982.trc:
ORA-00443: background process "VKRM" did not start
Errors in file /u01/app/oracle/diag/rdbms/instance/INSTANCE2/trace/INSTANCE2_ora_27467.trc:
ORA-00450: background process '' did not start
Errors in file /u01/app/oracle/diag/rdbms/instance/INSTANCE2/trace/INSTANCE2_ora_27467.trc:
ORA-00450: background process '' did not start
Error 450 happened during db open, shutting down database
USER (ospid: 27467): terminating the instance due to error 450
LGWR waiting for instance termination
Instance terminated by USER, pid = 27467
ORA-1092 signalled during: ALTER DATABASE OPEN...
opiodr aborting process unknown ospid (27467) as a result of ORA-1092
Looking at the trace listed above:
2011-05-09 12:17:18.305726 :84271119:db_trace:ksb.c@2157:ksbs1p_real(): [10254:6:464] KSBS1P: process DBRM trying to start background VKRM
2011-05-09 12:17:18.305729 :8427111A:db_trace:ksb.c@2220:ksbs1p_real(): [10254:6:464] KSBS1P: process DBRM obtained PR enqueue to start background VK
RM
2011-05-09 12:17:18.306021 :8427111D:db_trace:ksb.c@2354:ksbs1p_real(): [10254:6:464] KSBS1P: creation error posted OER(1089)
2011-05-09 12:17:18.306029 :8427111F:db_trace:ksb.c@2424:ksbs1p_real(): [10254:6:464] KSBS1P: out of loop: process did not start
Trace Bucket Dump End: default bucket for process 6 (osid: 26982, DBRM)
ORA-00443: background process "VKRM" did not start
kskdbrmpa: reply error 450
Any ideas? Again...I can't seem to find much of ANY information searching out there for the VKRM background process not starting...
Thanks in advance,
cayenne
Edited by: cayenne on May 9, 2011 11:34 AM

Anyone? Anyone? Bueller?
Ok..have been on phone with Oracle support, and have them stumped so far.
I've checked..other instances are running (except one other that failed to cleanly shut down with srvctl and same error messages).
I've check...ASM is running on all 5 nodes. I've used crsctl to check CRS on all nodes..clustering seems ok.
Memory while somewhat high...should have enough room...the system has never complained before, and this has been up on this config for over a year.
I was able on node one...to fire up the first nodes instance using the pfile there...it came up. I started it restrict..and promptly ran a datapump export, and then shut back down.
While Oracle support is going through logs and trace files I sent...I've got another 11Gr2 environment (3 node RAC) I've been using as a test environment...and am recreated the instance there temporarily to allow my developers to test and get past the upcoming deadline.
But, I'm still puzzled as to the solution on the main cluster. This seem to be normal, except these two instances....
any ideas on where and what to look for?
cayenne

Rename RAC-Instances in 11.2.0.2

Hi,
I have two Nodes RAC-Systems Version 11.2.0.2 on Linux Redhat 5.4 X86-64.
+ Node names stb, dwh
+ Database name : RAC
+ Instance-Name 1 : RAC1 on stb
+ Instance-Name 2 : RAC2 on dwh
After executing the following steps:
+ Delete Instance RAC2 with dbca on dwh
+ Convert Instance RAC1 to Instance RACONE_1 (RAC one node)
+ Relocate Instance RACONE_1 to dwh
+ Convert Instance RACONE_1 (RAC one node) to RACONE ( normal RAC )
+ Add Instance RACONE2 to stb
Since yesterday after shutdowning the corresponding instance I have tried unsuccessfully to rename the instance RACONE2 resp. RACONE to the previous names RAC1 & RAC2 with srvctl modify on the node with the running instance.
Can any expert help me?
Thanks
hqt200475
Note: http://download.oracle.com/docs/cd/E11882_01/rac.112/e16795/srvctladmin.htm#i1009714 shows:
srvctl modify instance -d db_unique_name -i instance_name
{-n node_name | -z}
Notes:
* You cannot use this command to rename or relocate a running instance.
* This command is only available with Oracle Clusterware and Oracle RAC.

Hi,
+ srvctl stop instance -d -i RACONE2
+ srvctl modify instance -d RAC -i RAC1 -n stb
Here I have the problem:
I don't know how to change the name RACONE2 to RAC1 and RACONE to RAC2.
Do you know the answer?Never tried to change the name of the instance in RAC 11.2.
But in earlier versions I always perform the following steps to update OCR after changing INSTANCE_NAME in Database (SPFILE).
We needs to invoke SRVCTL to remove and again add the database information to OCR.
e.g
*****before the rename*****
srvctl stop database -d
srvctl remove instance -d -i
srvctl remove instance -d -i
(repeat above command for each instance as needed)
*****and after the rename*****
srvctl add instance -d -i -n
(repeat above command for each instance as needed)Regards,
Levi Pereira
Edited by: Levi Pereira on Jan 30, 2011 10:36 PM

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

Hello all,
This has been a troublesome instance..a quick bit of background. This was created awhile back by someone else, I inherited this 3 mode RAC clusterof instance1.
I'm exporting out of one database (10G) into this instance1 (11G). When I was about to start the import..I found this instance wouldn't start. Turned out no backup had been going on of this empty instance. I backed up the archive logs to tape to free up the FRA..and things fired up.
I began the import, and found a bunch of errors...basically tellling me that I couldn't access one of the undo tablespaces...datafile problems.
I went to look and saw:
SQL> select a.file_name, a.file_id, b.status, a.tablespace_name
     2 from dba_data_files a, v$datafile b
     3 where a.file_id = b.file#
     4 order by a.file_name;
     FILE_NAME FILE_ID STATUS TABLESPACE_NAME
     +DATADG/instance1/datafile/sysaux.270.696702269              2 ONLINE                SYSAUX
     +DATADG/instance1/datafile/system.263.696702253              1 SYSTEM                SYSTEM
     +DATADG/instance1/datafile/undotbs1.257.696702279            3 ONLINE                UNDOTBS1
     +DATADG/instance1/datafile/undotbs2.266.696702305            4 ONLINE                UNDOTBS2
     +DATADG/instance1/datafile/undotbs3.269.696702313            5 RECOVER               UNDOTBS3
     +DATADG/instance1/datafile/users.268.696702321               6 ONLINE                USERS
     +DATADG/instance1/l_data_01_01                              11 ONLINE                L_DATA_01
     +DATADG/instance1/s_data_01_01                               7 ONLINE                S_DATA_01
     +DATADG/instance1/s_data_01_02                               8 ONLINE                S_DATA_01
     +INDEXDG/instance1/l_index_01_01                            12 ONLINE                L_INDEX_01
     +INDEXDG/instance1/s_index_01_01                             9 ONLINE                S_INDEX_01
     FILE_NAME FILE_ID STATUS TABLESPACE_NAME
     +INDEXDG/instance1/s_index_01_02                            10 ONLINE                S_INDEX_01
There is is, file #5.
So, I went into RMAN to try to restore/recover:
RMAN> restore datafile 5;
Starting restore at 06-APR-10
allocated channel: ORA_SBT_TAPE_1
channel ORA_SBT_TAPE_1: SID=222 instance=instance1 device type=SBT_TAPE
channel ORA_SBT_TAPE_1: NMO v4.5.0.0
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=222 instance=instance1 device type=DISK
creating datafile file number=5 name=+DATADG/instance1/datafile/undotbs3.269.696702313
restore not done; all files read only, offline, or already restored
Finished restore at 06-APR-10
RMAN> recover datafile 5;
Starting recover at 06-APR-10
using channel ORA_SBT_TAPE_1
using channel ORA_DISK_1
starting media recovery
RMAN-06560: WARNING: backup set with key 343546 will be read 2 times
available space of 8315779 kb needed to avoid reading the backup set multiple times
unable to find archived log
archived log thread=1 sequence=1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 04/06/2010 14:33:07
RMAN-06054: media recovery requesting unknown archived log for thread 1 with sequence 1 and starting SCN of 16016
This is all on ASM, and am a bit of a newb with that. I bascially have no data I'm worried about losing, I just need to get everything 'on the air' so I can import successfully, and let users on this instance. I've set up the backups in GRID now....so, it will be backed up on the future, but what is the quickest, most efficient way to get this UNDO tablespace datafile recovered?
Thank you,
cayenne

Hemant K Chitale wrote:
SET UNTIL SEQUENCE 27wouldn't work if the Recovery requires Sequence 1 and it is missing.
Hemant K ChitaleOops...meant to have start and set until both to "1"
However, I see what you mean. It seems I cannot find the file on tape.
Since the RAC instance hasn't yet had any data put into it, I'm thinking it might be best to just blow it away, and recreate everything.
Trouble is, I'm a bit new at RAC and ASM. I was thinking the best route might be to use DBCA to remove the database...? Would this not take care of removing all the datafiles from all the ASM instances on the RAC..as well as all the other directories, etc on all 3x nodes?
I've already used the dbca to create templates of this instance, so recreation shouldn't be too difficult (although it will be my first RAC creation)...
Thank you in advance for the advice so far,
cayenne

Getting error while starting the RAC instance through SRVCTL utility

Hi DBA's,
We are getting the below error while starting the Orcale 10g RAC instance on one of the node thru SRVCTL:
oracle:/home/oracle]>srvctl start instance -d SQLTSTM2 -i SQLTSTM21
PRKP-1001 : Error starting instance SQLTSTM21 on node r1racd
CRS-1028: Dependency analysis failed because of:
CRS-0223: Resource 'ora.SQLTSTM2.SQLTSTM21.inst' has placement error.
:oracle:/home/oracle]>
srvctl status database -d SQLTSTM2
PRKO-2015 : Error in checking condition of instance on node: r1racd
Instance SQLTSTM22 is running on node r2racd
oracle:/opt/oracle/product/10.2.0/db]>
NOTE: but i am able to start the instance thru SQLPLUS.
After starting the instance thru SQLPLUS i checked the CRS_STAT -t . It shows the status offline... Please find the details below:
Name Type Target State Host
ora....21.inst application OFFLINE OFFLINE
ora....22.inst application ONLINE ONLINE r2racd
ora....VLM2.db application ONLINE ONLINE r2racd
ora....21.inst application ONLINE ONLINE r1racd
ora....22.inst application ONLINE ONLINE r2racd
ora....STM2.db application ONLINE ONLINE r2racd
ora....SM1.asm application ONLINE ONLINE r1racd
ora....CD.lsnr application ONLINE ONLINE r1racd
ora.r1racd.gsd application ONLINE ONLINE r1racd
ora.r1racd.ons application ONLINE ONLINE r1racd
ora.r1racd.vip application ONLINE ONLINE r1racd
ora....SM2.asm application ONLINE ONLINE r2racd
ora....CD.lsnr application ONLINE ONLINE r2racd
ora.r2racd.gsd application ONLINE ONLINE r2racd
ora.r2racd.ons application ONLINE ONLINE r2racd
ora.r2racd.vip application ONLINE ONLINE r2racd
Thanks in advance...
Anil

Use the 'srvctl config database -d ' command to check if the instance has been configured in the Oracle Cluster Registry; make sure that the GSDs are running on each node in the cluster.
Also refere to Metalink note 295328.1

Communication between RAC instances

Hi,
I see different answers for this Communication between RAC instances in google.
1. UDP
2.Distributed Lock Manager (DLM)
which one of is correct?

both of them are correct on different layers. The IP protocol used over the interconnect is udp and one of the protocols/mechanism implemented above that is DLM.

Communication between RAC instances in google.

Hi,
I see different answers for this Communication between RAC instances in google.
1. UDP
2.Distributed Lock Manager (DLM)
which one of is correct?

Pl do not post duplicate threads - Communication between RAC instances
Srini

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
It is a two instance RAC running on servers, let's say - node1 and node2 . We are using ASM
Node 1 has an ASM instance ASM1 and Node 2 has an ASM instance ASM2.
There are 3 11g rdbms databases running on these nodes.
Instances db11,db21,db31 are running on node 1 and corresponding RAC instances db12,db22,db32 are running on node 2
The listeners are configured exactly the same on both nodes.
On Node 2, when I do
[oracle@node2 admin]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 19-NOV-2010 14:34:34
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                15-NOV-2010 13:33:49
Uptime                    4 days 1 hr. 0 min. 44 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /opt/oracle/product/11.2.0/grid/network/admin/listener.ora
Listener Log File         /opt/app/oracle/diag/tnslsnr/node2/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.10.7.42)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.10.7.52)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM2", status READY, has 1 handler(s) for this service...
Service "db1" has 2 instance(s).
Instance "db11", status READY, has 1 handler(s) for this service...
Instance "db12", status READY, has 2 handler(s) for this service...
Service "db2" has 2 instance(s).
Instance "db21", status READY, has 1 handler(s) for this service...
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...
The command completed successfullyThe above looks good which is what should be the case.
Now, if I try doing the same on node 1 (and this is where I am concerned)
[oracle@node1 admin]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 19-NOV-2010 14:41:45
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                19-NOV-2010 03:20:44
Uptime                    0 days 11 hr. 21 min. 1 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /opt/oracle/product/11.2.0/grid/network/admin/listener.ora
Listener Log File         /opt/app/oracle/diag/tnslsnr/node1/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.10.7.41)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.10.7.51)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "db1" has 1 instance(s).
Instance "db11", status READY, has 2 handler(s) for this service...
Service "db2" has 1 instance(s).
Instance "db21", status READY, has 2 handler(s) for this service...
Service "db3" has 1 instance(s).
Instance "db31", status READY, has 2 handler(s) for this service...
The command completed successfullyThe node 1 does not seem to report the fact that each of these 3 databases have 2 instances and also does not list its other instances besides the ones running on it. Any ideas or suggestions as to where to look?

One problem is here
The listeners are configured exactly the same on both nodes.This is incorrect, as the listeners need to have different names.
They need to have different names as listener_node1 is the remote_listener for node 2 and vice versa.
The correct set up is:
The listener name is node dependent.
The listener definition
listener_<node>=(host=)(protocol=)(port=)
is included in tnsnames.ora
the remote_listener parameter is set to the listener of the other node.
Using hardcoded IPs in listener.ora and tnsnames.ora is a bad idea.
Not sure why you don't ask this question in the RAC forum.
Sybrand Bakker
Senior Oracle DBA

Rac Instance Crashes

Dear all,
My version is 11.2.0.2.5 one of my rac instance crashes with message ORA-00240: control file enqueue held for more than 120 seconds. Received an instance abort message from instance 1.
here are the contents of alert log file
IPC Send timeout detected. Receiver ospid 27423 [[email protected] (LMON)]
2013-03-22 22:30:05.644000 -07:00
Errors in file /u01/app/oracle/diag/rdbms/lfgoimdb/LFGoimdb2/trace/LFGoimdb2_lmon_27423.trc:
2013-03-22 22:31:08.734000 -07:00
Errors in file /u01/app/oracle/diag/rdbms/lfgoimdb/LFGoimdb2/trace/LFGoimdb2_arc2_27691.trc (incident=15905):
ORA-00240: control file enqueue held for more than 120 seconds
Incident details in: /u01/app/oracle/diag/rdbms/lfgoimdb/LFGoimdb2/incident/incdir_15905/LFGoimdb2_arc2_27691_i15905.trc
2013-03-22 22:31:13.409000 -07:00
Received an instance abort message from instance 1
Please check instance 1 alert and LMON trace files for detail.
LMS0 (ospid: 27427): terminating the instance due to error 481
System state dump requested by (instance=2, osid=27427 (LMS0)), summary=[abnormal instance termination].
System State dumped to trace file /u01/app/oracle/diag/rdbms/lfgoimdb/LFGoimdb2/trace/LFGoimdb2_diag_27413.trc
2013-03-22 22:31:18.376000 -07:00
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

Thanks for reply,
My redo logs size is default 50mb.There is currently no load on the system since we are not using this environment for time being.The log switches are averaged to be 8 per day.I think Increasing the size of redo will further cause the problems since the archiver may again hold lock for more time.
Since there is no dedicated connection between the nodes and storage ,So increasing the hardware and network configuration is only solution to this? Or I am still missing something...
As far as configuration is considered i cannot add more resources to this environment.How can I solve this issue?

RAC instance name - Can i choose my OWN?

Can i choose RAC instance name rather than defined by DBCA?
for example, i want to name my instance as <DBNAME>_1

yes you can
Cheers

How many 11gR2 RAC instance servers would be needed?

On the shared SAN drive - there will be as many as 6 11gR2 databases. For 2 node RAC instance servers - how many instance servers would work fine - are two separate servers needed for each database?

user7107816 wrote:
On the shared SAN drive - there will be as many as 6 11gR2 databases. For 2 node RAC instance servers - how many instance servers would work fine - are two separate servers needed for each database???? That depends. Does each database require high availability? Your question seems to indicate a lack of understanding of what RAC provides and how it achieves that goal... High Availability.
RAC can also be used to provide additional horsepower - on the fly. I have added a new node - start to finish in < 2hrs. (new hardware+install/configure OS+addnode to RAC and have it online and operational.) No other database solution offers this flexability.

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

Dear all,
I need to have my application server determine which RAC-
instance is currently active (logged onto). I have a
tnsnames.ora file with a primary-, and secondary RAC-
instance configured, and Failover/Failback between the
instances work fine. However, I would be interested in
determining which instance I am curently using.
Does the Oracle Net Protocol have support for letting me
"read" this out, or...?
Thanks.
Regards, Eldor R.

Thank you for the prompt reply.
Is there, in the Oracle Net Protocol, available
function(s) for reading out this information
directly without "parsing" the trace file?
I would like to read out this information from my
application run-time.
Thanks.

Stopping Addon instances

Hallo everyone is there an easier way of stopping an instance of an addon after stopping it from the AddOn manager..?

hello
you can use the following code
Public Sub SBO_Application_AppEvent(ByVal EventType As SAPbouiCOM.BoAppEventTypes) Handles SBO_Application.AppEvent
        ''On Error Resume Next
        Select Case EventType
            Case SAPbouiCOM.BoAppEventTypes.aet_LanguageChanged
            Case Else ' every another message
                end 'the addon is stopped
        End Select
    End Sub
This usually works.
regards
János

Stopping RAC instances on shutdown (10g - RHEL3)

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