Identify the storage of our RAC database

I am new to RAC - We have setup of 11gr2 two node rac - I am doing a sanity check like below what is our storage How does we identify our shared disks defined (local, SAN, iSCSI)?

967023 wrote:
I am new to RAC - We have setup of 11gr2 two node rac - I am doing a sanity check like below what is our storage How does we identify our shared disks defined (local, SAN, iSCSI)?
Local disks could not be used in the case of RAC as the last needs shared.
1. Identify disks used for ASM:
asmcmd lsdsk
2. Disks may be presented through HBA, iSCSI, dNFS.
3. Disks may be presented with a single path. And i.1 will give necessary information.
Or multipath may be used.
4. List disks with:
ls -l /dev/disk/by-id
Path like
lrwxrwxrwx 1 root root 24 Mar 14 02:25 scsi-1ATA_VBOX_HARDDISK_VB3ee53981-f184882e -> ../../oracleasm/OCRVOTE3
will indicate shared VBox disk
ls -l /dev/disk/by-path
Paths like
lrwxrwxrwx 1 root root 9 Feb 16 11:43 ip-xx.xx.xx.xx:7260-iscsi-iqn.2010-06.com.purestorage:flasharray.123456qwerty-lun-1 -> ../../sde
will indicate iSCSI
iscsiadm -m session -P 1
may give additional information in the case of iSCSI
multipath -ll
may give additional information in the case of HBA.
P.S.
Checked against OL5.

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Hi Friends,
In 10g RAC will Nodeapps register the listener service of RAC database?
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Hi,
This is expected behavior. The default listener (listener_nodename) could be starte and stopped with nodeapps.
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http://docs.oracle.com/cd/B19306_01/rac.102/b14197/whatsnew.htm#sthref6
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http://docs.oracle.com/cd/B19306_01/rac.102/b14197/srvctladmin.htm#i1009606
http://docs.oracle.com/cd/B19306_01/rac.102/b14197/srvctladmin.htm#CDCEIDFH

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we want move my database server to other system, i need to install same oracle server version and apply those patches which are applied in the current system and then move the database.
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How to know the patches applied on DB?

Check the case in our production database and development

at our end development : -
TABLE NAME     NUM ROWS     BLOCKS     AVG ROW LEN     CACHE     SAMPLE SIZE     LAST ANALYZED
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CP_BAGS     4,532,370      104,659      322      N     453,237      08/08/2007
CP_DAILY_INV_ACTIVITY     6,267,560      55,007      119      N     626,756      08/08/2007
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index statistics :-
at our end development :-
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Some queries on RAC database 11g

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user12075620 wrote:
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Processing object type DATABASE_EXPORT/SYSTEM_PROCOBJACT/PRE_SYSTEM_ACTIONS/PROCACT_SYSTEM
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Get the table's rowid of the session that is locking in RAC database

I am a developer and not a DBA and I need to find th correct query to find the exact rowid of the record locked on a table. This is for a RAC database and locked record can be from the web form in oracle application server. When I try to get the correct row id, I get the following error:
ORA-01410 - Invalid row id
For the criteria, the output is Dbms_Rowid.rowid_create(1, -1, 36, 7845, 0), why I get a -1 for the ROW_WAIT_OBJ#?
Additional Information: The lock type is DML and the lock mode is: Row Exclusive, the table is locked and the program is web oracle forms executiong.
I am executing the query in Oracle Database 11g Enterprise Edition Release 11.1.0.7.0
How to accomplish gettting the correct rowid? Below is the selection criteria I have:
select vs.inst_id,
vs.audsid audsid,
locks.sid sid,
locks.type,
locks.id1 id1,
locks.id2 id2,
locks.lmode lmode,
locks.request request,
locks.ctime ctime,
locks.block block,
vs.serial# serial#,
vs.username oracle_user,
vs.osuser os_user,
vs.program program,
vs.module module,
vs.action action,
vs.process process,
decode(locks.lmode,
0, '0 None',
1, '1 NULL',
2, '2 Row Share',
3, '3 Row Exclusive',
4, '4 Share',
5, '5 Share Row Exclusive',
6, '6 Exclusive', '?') lock_mode_held,
decode(locks.request,
0, '0 None',
1, '1 NULL',
2, '2 Row Share',
3, '3 Row Exclusive',
4, '4 Share',
5, '5 Share Row Exclusive',
6, '6 Exclusive', '?') lock_mode_requested,
decode(locks.type,
'MR', 'Media Recovery',
'RT', 'Redo Thread',
'UN', 'User Name',
'TX', 'Transaction',
'TM', 'DML',
'UL', 'PL/SQL User Lock',
'DX', 'Distributed Xaction',
'CF', 'Control File',
'IS', 'Instance State',
'FS', 'File Set',
'IR', 'Instance Recovery',
'ST', 'Disk Space Transaction',
'TS', 'Temp Segment',
'IV', 'Library Cache Invalidation',
'LS', 'Log Start or Log Switch',
'RW', 'Row Wait',
'SQ', 'Sequence Number',
'TE', 'Extend Table',
'TT', 'Temp Table',
locks.type) lock_type,
vs.row_wait_obj# row_wait_obj#,
vs.row_wait_file# row_wait_file,
vs.row_wait_block# row_wait_block#,
vs.row_wait_row# row_wait_row#,
dbms_rowid.rowid_create ( 1, vs.ROW_WAIT_OBJ#, vs.ROW_WAIT_FILE#, vs.ROW_WAIT_BLOCK#, vs.ROW_WAIT_ROW# ) rowid_created,
objs.owner object_owner,
objs.object_name object_name,
objs.object_type object_type,
round( locks.ctime/60, 2 ) lock_time_in_minutes,
from gv$session vs,
gv$lock locks,
dba_objects objs,
dba_tables tbls
where locks.id1 = objs.object_id
and vs.sid = locks.sid
and objs.owner = tbls.owner
and objs.object_name = tbls.table_name
and objs.owner != 'SYS'
-- and locks.type in ('TM', 'TX')
order by lock_time_in_minutes;
Edited by: user3564713 on Jun 10, 2012 10:56 PM

Firstly, read this thread
Identifying locked rows
And the last bit from Randolf
>
It is a common misconception that you can locate a locked row in Oracle via a query. The point is that the information that you're querying only gets populated in case of a blocking lock, and even then not in every case, since you might have blocking locks that do not refer to a particular row.
Oracle stores the lock information within the block, so if you identified in which block the row is located that you've attempted to lock, you could get detailed information about the row locks of that block by performing a block dump.
Other than that Oracle doesn't maintain this information anywhere else and it is only externalized for blocking situations - it is a matter of design that there is no central lock manager in Oracle that would inherently limit scalability, hence the downside of that approach is that there is no central information pool where you could obtain detailed information about row level locks.
>
However, if you see support note "Sample Code to Select from a Table EXCLUDING Locked Rows [ID 186531.1]"
You can take the same code from the script in that note to identify rowid of the locked rows.

How to identify the physical IP address of AIX server on RAC Oracle 10g

Hi All,
Could you please help someone to identify the physical IP address of IBM AIX on RAC db. I have access to the database and I don't know whether the hostname mentioned in the tnsnames.ora file is virtual or physical ip adress . Is there any command to identify the physical IP address of AIX server. My objective is to gain acccess to those servers. I am a bit confused by looking at the virtual IP, private IP and Public IP addresses in the documentation and I am relatively new to this area. Also note that I am a junior developer who is trying to learn some new stuff.
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I am assuming you have access to the servers indicated in the tnsnames.ora file. After logging into those servers, take a look at /etc/hosts files, which lists the IP addresses and its associated host names. See if that helps. Another option is if you don't have access to the servers, "nslookup <ip_address_from_tns.ora>" should list the server name associated with the given IP Address. If your SAs have followed the general naming conventions - you should see -vip at the end.
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The external script exists at a only one Node(Node 1).
select status,instance_id, additional_info
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I would like to force the job to ALWAYS run on Node 1.
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Locating the script on Node 2 is not the option.
Best and Regards.

Hi,
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I am posting what solved our situation here, in case it helps others:
We have RAC databases that use SCAN, but also use their Local_Listener ports (because we could not go completely to SCAN due to our applications).
For some reason, 11.1 Grid Control could see instances if we added them separately, but if we tried to connect to the database & view the performance, it would error out with "The Network Adapter could not establish the connection".
We had to fix it by manually setting the connect string in every instance and database in the OEM Setup to the non-SCAN VIP/Ports.
Hopefully this saves someone else hours & hours of troubleshooting. (I know, the day after Grid Control 12 comes out. SOOO helpful. :P )

Aravind K R wrote:
java.sql.SQLException: The Network Adapter could not establish the connectionWhere is the Oracle error? I hate this - s/w like Java suppressing the underlying error codes and messages. Just how the hell can one diagnose an error when not knowing exactly what it is? There should be a TNS error code and message.
From the info you've given, one can only guess. And the following guess is as good as any. Load balancing is requested. Likely your RAC db services are registered on both static and virtual IPs - as the listeners are running listener 1521/tcp end points on both.
This means the client can get a redirect to connect to a specific listener on a specific IP - and this includes the static IPs. The listener usually passes hostnames (as that is what is configured). If the client cannot resolve that static hostname to an IP, it cannot correct.
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2 RAC database in the same box

Hello,
I have a RAC env composed of 2 nodes. The database name is dbfunc1 and it is in 11gR2 version under Redhat Linux 5; this is a test env.
Now we need to create another RAC database in the same hosts with database name dbfunc2 with exactly the same structure, same parameters, etc... this RAC database will be used for the same product but for test level 1 purpose. I am thinking to create an XML template for the dbfunc1 using dbca and then create silently the database dbfunc2.
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Thank you
Diego

Diego wrote:
Hello,
I have a RAC env composed of 2 nodes. The database name is dbfunc1 and it is in 11gR2 version under Redhat Linux 5; this is a test env.
Now we need to create another RAC database in the same hosts with database name dbfunc2 with exactly the same structure, same parameters, etc... this RAC database will be used for the same product but for test level 1 purpose. I am thinking to create an XML template for the dbfunc1 using dbca and then create silently the database dbfunc2.
My question is: is it possible to use the already created and configured listener in the hosts or I must create a new listerenr listeneing on new ports to support the database dbfun2? Perhaps, both DB will use the SCAN listener ...
Thank you
DiegoYou can have both configuration i.e. one local listener for host for both database or two seperate. But as a best pratice you can create seperate listener for new database just to have proper load balancing.
Its obvious that finally SCAN listenr will handover its connections to host listener, so if you have only one then there would be more connection (handle by local listener) as compared to past(when you had only 1 database),
Now you have 2 databases so connections would be more.

How can i identify the environment name or database name in the PL/SQL code

Hi,
I am using UTL_FILE to genearate the files.,
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You would have to find something in the v$database or v$instance table that uniquely identifies the database (and you may need some help from the DBAs to do this because you need to ensure that the data element you choose is compatible with whatever refresh process(es) are used in your environment).
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Justin

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