Can't locate object method "header_in" via package "Apache2::RequestRec" AdjustRemoteAddrAccordingToHeader.pm line 9

Ao migrar o Oracle Portal para versão 11G, o script AdjustRemoteAddrAccordingToHeader.pm começou a apresentar o seguinte erro:

 Can't locate object method "header_in" via package "Apache2::RequestRec" at /u01/app/oracle/product/Middleware/asinst_1/config/OHS/ohs1/AdjustRemoteAddrAccordingToHeader.pm line 9

Para resolver este problema, basta acrescentar o seguinte:

use Apache2::compat;

AdjustRemoteAddrAccordingToHeader.pm:

package Apache::AdjustRemoteAddrAccordingToHeader;

use Apache2::compat;

sub handler
{
        my $r = shift;
        my $configuredValue = $r->dir_config ("UseIPFromHeader");
        if ($configuredValue)
        {
                my $ip = $r->header_in($configuredValue);
                if ($ip)
                {
                        $r->connection->remote_ip($ip);
                }
        }
        else
        {
                print STDERR "AdjustRemoteAddrAccordingToHeader: PerlSetVar UseIPFromHeader is not set, so I did not do anything\n";
        }

        # Adjust for Oracle HTTP Server and REMOTE_ADDR
        # Remove this line if not necessary
        $r->header_in("ClientIP", $r->connection->remote_ip());

        return OK;
}

return 1;

httpd.conf:

PerlRequire /u01/app/oracle/product/Middleware/asinst_1/config/OHS/ohs1/AdjustRemoteAddrAccordingToHeader.pm
PerlPostReadRequestHandler Apache::AdjustRemoteAddrAccordingToHeader
PerlSetVar UseIPFromHeader X-Forwarded-For

Recommended Patches for Oracle Portal 11g (Doc ID 1443292.1)

Atualizar a versão do OPATCH 11.1.1x --> Patch:6880880

Aplicar o Patch:15844859 - MLR: MANDATORY PATCH FOR PORTAL 11G PATCHING V3 --> mesmo sendo da versão 11.1.1.4 ele é obrigatório para aplicar os patchs no 11.1.1.7.0

O Portal continua na versão 11.1.1.6, então mesmo no 11.1.1.7, deve-se aplicar os patchs abaixo:
 Portal Repository Patch 15997732 - Generic Platform
 Portal Repository Patch 13938784 - Generic Platform

Atualizar o WEBCACHE:

Oracle Web Cache 11.1.1.7.0
 WebCache 11.1.1.7 Oct 2013 CPU Patch 17306880 or higher

Documentos interessantes:
Unable To Apply Oracle Portal 11g Patches Using OPatch Getting Too Many Arguments And OS Undefined Variable (Doc ID 1465506.1)

Error 1:
=======
opatch: line 386: [: too many arguments
- This is caused by using the double quotes " " in the opatch command. The readme incorrectly has these around the -pre section and they should not be there.

Error 2:
========

Please set your ORACLE_HOME to your 10.1.2 midtier installation home.
.....................................................................
OS: Undefined variable.

Command invocation returned Error... 'OS: Undefined variable.
', Return Code = 1

- This is caused by a few issues. Ensure you have the latest 11.1.0.0.0 OPatch version downloaded, and ensure you have the Mandatory Portal 11g Patching Patch which fixes issues with the patching tool itself. 
Reference: Note 1443292.1 Recommended Patches for Oracle Portal 11g 
- That patch applies to all Portal 11g versions.

UKOUG - TECH13

#ukoug_tech13 – Impressions

Na primeira semana de Dezembro de 2013, estive em Manchester para a conferência TECH13 do UKOUG.

Realmente fiquei impressionado com o nível técnico e a organização do evento.

Finalmente conheci pessoalmente alguns grandes nomes quando se trata de Oracle:

Øyvind Isene

Osama Mustafa

Debra Lilley

Philippe Fierens

Maris Elsins

Jan Karremans

Jonathan Lewis

Maria Colgan

Andy Colvin

Frits Hoogland

Bjoern Rost
Heli Helskyaho

E o Tim Hall do oracle-base.com

http://www.oracle-base.com/blog/2013/12/03/is-this-the-most-committed-ukoug-tech13-attendee/

Fiz o credenciamento e comecei a participar do evento no domingo 01/12 (Super Sunday)

A primeira palestra do dia foi com a lenda Jonathan Lewis - Compression: Index, basic and OLTP

 A segunda foi com James Morle (ACE Director) - Optimal Oracle Configuration for Efficient Table Scanning

A terceira foi com Frits Hoogland (ACE Director) da Enkitec - About Multiblock Reads

Ele compartilhou os resultados de sua pesquisa de 2 anos sobre leituras no Oracle. Muito interessante a demonstração dos eventos de trace do Oracle + strace.

 A primeira da Segunda-Feira, foi com Zoran Pavlovic e Maja Veselica - New Security Features in Oracle Database 12c

A segunda foi com Andy Colvin (Oracle ACE) da Enkitec - RMAN in Oracle Database 12c - Top New Features

Fez uma demonstração ao vivo de como utilizar Table Point-in-time Recover.

A terceira foi com Jonathan Lewis e Maria Coglan - Oracle Optimizer Boot camp – 10 Optimizer Tips you Can’t Miss

Foi basicamente a mesma apresentação que eles fizeram no OOW13.

A quarta foi com Joel Goodman - Roundtable - RAC and Grid Infrastructure

Uma discussão muito interessante sobre o 12c.

A quinta foi com Maria Colgan - Introduction to the New Oracle Database In-Memory Option

A sexta foi com Dawid Wojcik do Cern - Cardinality Feedback Tuning Revisited – Adaptive Query Optimization in Oracle 12c

A sétima foi com Tom Kyte - Oracle Optimizer: What’s New in Oracle Database 12c?

 Na terça-feira, iniciou com Joze Senegacnik (Oracle Ace Director) - Query Transformations Revisited

A segunda foi com Larry Carpenter da Oracle - Oracle Active Data Guard: Next Generation Data Protection

A terceira, foi novamente com Joze Senegacnik - Opening the Black Box Called “Cost Based Optimizer

A quarta foi novamente com Larry Carpenter da Oracle - Oracle Maximum Availability Architecture Best Practices for Oracle Multitenant

 A quinta foi com Tom Kyte - Understanding Optimizer Statistics

A sexta foi com Kyle Hailey (Oracle Ace)  da Delphix - Lies, Damned Lies, and I/O Statistics

Na quarta, iniciei com Joel Goodman - Masterclass: Oracle Parallel Execution

A segunda for com Maris Elsins da Pythian - 10 Ways to Improve your RMAN Script

A terceira foi com Martin Bach (Oracle Ace) da Enkitec - Using Cross-Platform Transportable Tablespaces to Reduce Downtime

A quarta foi com Tony Hasler e Jonathan Lewis - Debate: Does Oracle Ignore Hints?

A quinta foi Julian Dyke (Oracle Ace) - Oracle 12c New Features – Picking the Winners

A sexta foi com Cameron Purdy da Oracle - Cloud Application Foundation 12c - Developing and Deploying Java Applications in Modern Data Center Architectures

E o encerramento foi com Thomas Kyte - What I Learned from TECH13

Estou reunindo os links das apresentações e assim que possível colocarei no nosso site de Grupo de Usuários Oracle Angola - GUOA (www.guoa.org).

Até mais.

Alex Zaballa

O GUOA foi oficialmente lançado em Angola! 
Entre no site para conferir as fotos do Evento e aproveite para se registrar! (www.guoa.org)

Como recuperar uma package, function ou procedure dropada acidentalmente

select object_id,object_name,object_type from dba_objects where object_name = 'OWA_UTIL';

select source
 from sys.source$
 as of timestamp(sysdate - 1)
where obj#=6298
order by line

Após o upgrade para 11.2.0.4 - unable to delete any rows from table with context index due to error: "PLS-00306: wrong number or types of arguments in call to 'SYNCRN'" (Doc ID 1586704.1)

After upgrade to 11.2.0.4 unable to delete any rows from table with context index due to error: "PLS-00306: wrong number or types of arguments in call to 'SYNCRN'" (Doc ID 1586704.1)


connect / as sysdba
alter session set current_schema=CTXSYS; 

create or replace procedure syncrn (
  ownid IN binary_integer,
  oname IN varchar2,
  idxid IN binary_integer,
  ixpid IN binary_integer,
  rtabnm IN varchar2,
  srcflg IN binary_integer,
  smallr IN binary_integer
)
  authid definer
  as external
  name "comt_cb"
  library dr$lib
  with context
  parameters(
    context,
    ownid  ub4,
    oname  OCISTRING,
    idxid  ub4,
    ixpid  ub4,
    rtabnm OCISTRING,
    srcflg ub1,
    smallr ub1
);
/

Como Instalar o Oracle Developer Suite 6i (Patch 18) em Windows 8

Install Oracle Developer Suite 6i (Patch 18) on Windows 8

http://windows7bugs.wordpress.com/2012/08/25/windows-8-oracle-developer-suite-6i-patch-18/

OBIEE 11g: "OBIEE content cannot be displayed in an IFrame"

http://atlantabi.blogspot.com/2011/12/obiee-11g-obiee-content-cannot-be.html

Doc ID 1427865.1
Doc ID 1540125.1

Erro "java.lang.Throwable: ResourceBundle is null" durante o ugprade do Oracle Portal

java.lang.Throwable: ResourceBundle is null - Portal upgrade

Applying patchset 10.1.2.2 or 10.1.2.3 to midtier hangs on portal upgrade.

Log file shows:

[java.lang.Throwable: ResourceBundle is null 
at oracle.sysman.oii.oiix.OiixJarResourceBundle.(OiixJarResourceBundle.java:124) 

The $ORACLE_HOME/j2ee/OC4J_Portal/applications/portal/portal/WEB-INF/web.xml  got corrupted.

Solution 

Adjust or Restore the original web.xml

OBIEE 11G - "HTTP 500 Internal server error" ao tentar acessar o Mapviewer

HTTP 500 Internal server Error Trying To Access Mapviewer

Stop the managed server

cd home>/Oracle_BI1/bifoundation/jee/mapviewer.ear

rm web.war/WEB-INF/lib/adf-faces-api.jar
rm web.war/WEB-INF/lib/adf-faces-impl.jar
rm web.war/WEB-INF/lib/commons-digester.jar
rm web.war/WEB-INF/lib/commons-logging-1.1.jar
rm web.war/WEB-INF/lib/jsf-api.jar
rm web.war/WEB-INF/lib/jsf-impl.jar
rm web.war/WEB-INF/lib/jsr173_1.0_api.jar
rm web.war/WEB-INF/lib/mvutil.jar
rm web.war/WEB-INF/lib/xdb.jar
rm web.war/WEB-INF/adf-faces-config.xml
rm web.war/WEB-INF/orion-web.xml

rm -rf home>/user_projects/domains/bifoundation_domain/servers/bi_server1/tmp/_WL_use
r/mapviewer_11.1.1

Restart the managed server.

Utizando "Reports Server Queue" - 10g

Using the Reports Server Queue - 10g

Execute RW_SERVER.sql script (located in $ORACLE_HOME/reports/admin/sql)

cd $ORACLE_HOME/reports/admin/sql
sqlplus scott/tiger@dbalias
SQL> @rw_server.sql


The Reports Server's configuration file is located at $ORACLE_HOME/reports/conf/.conf

The RW_SERVER_JOB_QUEUE table capures data.


*****Se the maxQueueSize parameter, default is 1000.

Red Hat / Oracle Enterprise Linux I/O tuning for Oracle databases

http://blog.yannickjaquier.com/linux/red-hat-oracle-enterprise-linux-io-tuning-for-oracle-databases.html

Utilizando o EM12c para visualizar o valor das variáveis bind

Using EM12C to see bind variables

http://jhdba.wordpress.com/2013/07/24/using-em12c-to-see-bind-variables/

FMAP no OBIEE 11g

FMAP in OBIEE 11g

http://oraclebisolutions.blogspot.com.br/2013/01/fmap-in-obiee-11g.html

http://techforum4u.com/entry.php/3474-How-To-Use-Images-In-OBIEE-11G

ORA-15032 ORA-15054

ALTER DISKGROUP FRA01 DROP DISK "_DROPPED_0001_FRA01" FORCE;

ORA-15032: not all alterations performed ORA-15054: disk "_DROPPED_0001_FRA01" does not exist in diskgroup "FRA01"


[root@maiombe ~]# /etc/init.d/oracleasm querydisk -d DISK04
Disk "DISK04" is a valid ASM disk on device [8,65]

[root@maiombe ~]#  ls -l /dev |grep 8|grep 65
brw-r----- 1 root disk    8,  65 Jul  5 09:34 sde1

[root@maiombe ~]# dd if=/dev/zero of=/dev/sde1 bs=4k count=20000

20000+0 records in

20000+0 records out

81920000 bytes (82 MB) copied, 0.361043 seconds, 227 MB/s

[root@maiombe ~]# /etc/init.d/oracleasm scandisks

Scanning the system for Oracle ASMLib disks:               [  OK  ]

[root@maiombe ~]# /etc/init.d/oracleasm listdisks

DISK01

DISK02

DISK03

[root@maiombe ~]# /etc/init.d/oracleasm createdisk DISK04 /dev/sde1

Marking disk "DISK04" as an ASM disk:                      [  OK  ]

[root@maiombe ~]# /etc/init.d/oracleasm listdisks

DISK01

DISK02

DISK03

DISK04

SQL> ALTER DISKGROUP FRA01 ADD DISK 'ORCL:DISK04';

Diskgroup altered.

Configurando o Oracle HTTP Server (OHS) nas portas 80 e 443

Configure Oracle HTTP Server (OHS) on port 80 / 443

http://onlineappsdba.com/index.php/2013/05/30/configure-oracle-http-server-ohs-on-port-80-443

Alterando a string “Business Intelligence” no cabeçalho do OBIEE11g

Change the “Business Intelligence” name on OBIEE11g Common Portal header

/u01/app/oracle/product/Middleware/Oracle_BI1/bifoundation/web/msgdb/l_en/messages/productmessages.xml

change:

Business Intelligence

restart bi presentation.

Limpando o cache no OBIEE11G

Clear cache in OBIEE11G

/u01/app/oracle/product/Middleware/instances/instance1/bifoundation/OracleBIApplication/coreapplication/setup/bi-init.sh

/u01/app/oracle/product/Middleware/Oracle_BI1/bifoundation/server/bin/nqcmd -d AnalyticsWeb -u weblogic -p PASSWORD -s /u01/app/oracle/product/Middleware/instances/instance1/bifoundation/OracleBIApplication/coreapplication/setup/purgecache.txt

purgecache.txt:

For all:
Call SAPurgeAllCache()

For especific table:
Call SAPurgeCacheByTable( 'Biminfin - Físico', '', 'BIMINFIN','TB_FAT_0_CAD_DESPESA' );

Customizando a página de login, imagens e logos do OBIEE11g

Customizing Login pages, Images and Logos in OBIEE11g

To change logo and Login page in obiee 11g:

/u01/app/oracle/product/Middleware/Oracle_BI1/bifoundation/web/app/res/sk_blafp/login

/u01/app/oracle/product/Middleware/user_projects/domains/bifoundation_domain/servers/AdminServer/tmp/.appmergegen_1316154755380/analytics.ear/ukjjdc/res/sk_blafp/b_mozilla_4

/u01/app/oracle/product/Middleware/user_projects/domains/bifoundation_domain/servers/AdminServer/tmp/.appmergegen_1316154755380/analytics.ear/ukjjdc/res/sk_blafp/login

/u01/app/oracle/product/Middleware/user_projects/domains/bifoundation_domain/servers/bi_server1/tmp/_WL_user/analytics_11.1.1/7dezjl/war/res/sk_blafp/b_mozilla_4

/u01/app/oracle/product/Middleware/user_projects/domains/bifoundation_domain/servers/bi_server1/tmp/_WL_user/analytics_11.1.1/7dezjl/war/res/sk_blafp/login

To Change images :

/u01/app/oracle/product/Middleware/user_projects/domains/bifoundation_domain/servers/AdminServer/tmp/.appmergegen_1307357397958/analytics.ear/ukjjdc/res

/u01/app/oracle/product/Middleware/user_projects/domains/bifoundation_domain/servers/bi_server1/tmp/_WL_user/analytics_11.1.1/7dezjl/war/res/s_blafp/images

/u01/app/oracle/product/Middleware/Oracle_BI1/bifoundation/web/app/res/s_blafp/images

/u01/app/oracle/product/Middleware/user_projects/domains/bifoundation_domain/servers/AdminServer/tmp/.appmergegen_1291264099332/analytics.ear/ukjjdc/res/s_blafp/images

OPatch found the word "warning" in the stderr of the make command

OPatch found the word "warning" in the stderr of the make command.
Please look at this stderr. You can re-run this make command.
Stderr output:
ins_precomp.mk:19: warning: overriding commands for target `pcscfg.cfg'
/u01/app/oracle/product/11.2.0.3/db/precomp/lib/env_precomp.mk:2160: warning: ignoring old commands for target `pcscfg.cfg'
/u01/app/oracle/product/11.2.0.3/db/precomp/lib/ins_precomp.mk:19: warning: overriding commands for target `pcscfg.cfg'
/u01/app/oracle/product/11.2.0.3/db/precomp/lib/env_precomp.mk:2160: warning: ignoring old commands for target `pcscfg.cfg'

This is a warning only which opatch is reporting.  The Patch has applied successfully and the warning output can be safely ignored.

11.2 Oracle Restart – Alterando o Hostname

11.2 Oracle Restart – Changing Hostname

http://oraganism.wordpress.com/2009/12/20/11-2-changing-hostname/

Portal Shows Bad Performance And Hangs

Doc ID 1097532.1

Ajustando as permissões do Oracle Portal

Adjust Oracle Portal permissions


declare
 v_dn varchar2(2000);
 v_id number;
begin
for i in (select ID, OBJECT_TYPE_NAME, OWNER, NAME,
  GRANTEE_GROUP_ID, GRANTEE_USER_ID, GRANTEE_TYPE, PRIVILEGE,CREATED_BY_DBUSER,CREATED_BY_USER from PORTAL.WWSEC_SYS_PRIV$
where GRANTEE_GROUP_ID <> 0
) loop
 begin

  select dn
    into v_dn
    from wwsec_group$ where id=i.grantee_group_id;

  select max(id)
    into v_id
   from wwsec_group$ where dn = v_dn;
end;

begin
 
  update PORTAL.WWSEC_SYS_PRIV$
     set grantee_group_id = v_id
   where id=i.id;
 exception when others then
   dbms_output.put_line('erro '||i.id);
 end;
end loop;
commit;
end;

The Oracle Home /u01/app/oracle/product/as10g/MidTier is not registered with the Central Inventory. OPatch was not able to get details of the home from the inventory.

./runInstaller -silent -invPtrLoc /etc/oraInst.loc -attachHome ORACLE_HOME=$ORACLE_HOME ORACLE_HOME_NAME="MID_1013"

EM12c - sudo: no tty present and no askpass program specified

Disable the 'requiretty' and visiblepw option in the 'sudoers' file and rerun the failed job.

Verify if you don't have:

oracle   ALL=(ALL)           ALL

12c: Credentials Fail - PAM authentication...PAM failed with error: libpam.so: cannot open shared object file: No such file or directory

DOC ID 1477095.1

cd /lib
ln -s libpam.so.0 libpam.so

cd /lib64
ln -s libpam.so.0 libpam.so

Alterando o tempo de inatividade do Oracle Enterprise Manager 12c

Changing Enterprise Manager 12c Default inactive Timeout

http://www.fuadarshad.com/2013/02/changing-enterprise-manager-12c-default.html

How to Configure Oracle Portal 11g with Reverse Proxy SSL

MOS ID: 1119068.1

Converting SSL certificate generated by a 3rd party to an Oracle Wallet

http://fusionsecurity.blogspot.com/2012/11/converting-ssl-certificate-generated-by.html

Portal Wire Configuration option that replaces ptlconfig in Portal 11.1.x.

[ID 1392576.1]

1.  Access Fusion Middleware Control (http://servername:port/em).

2.  In the Navigation Pane, expand the Domain Farm > Portal > and select portal (WLS_PORTAL).

3.  From the Portal drop down, select Settings > Wire Configuration.

Or WebLogic Scripting Tool.

Oracle Text release 11.2.0.3.0 mandatory Patches

ID 1386945.1

• Apply Patch 12960302 to fix the ORA-30576, DRG-10607 and ORA-1426 errors.
• Apply Patch 13922299 to fix the meta data corruption, the core dump in function druhfind() from 'create index' statement and the import problem.

Attempting to Configure a New SSL Listen Port in 11g Web Cache Admin Fails with Please enter a non-empty string for CRL Path

ID 1497163.1

Create a new http (non-SSL)
Convert the Listen port to SSL 

Adding an Index to an Existing Attribute by Using Oracle Directory Services Manager

To add an index to an existing attribute:

1. Invoke Oracle Directory Services Manager and connect to the Oracle Internet Directory server as described in "Invoking Oracle Directory Services Manager".
2. From the task selection bar, select Schema.
3. Select an attribute that is not currently indexed that you want to add the index to.
4. Click the The attribute will be cataloged/decataloged icon. When the Confirm Dialog appears, click Confirm.
5. The Indexed box indicates that the attribute is indexed.

STARTUP and Shutdown Portal 11g

create boot.properties files:
$FORMSREPORTSDOMAIN/servers/AdminServer/security/boot.properties
$FORMSREPORTSDOMAIN/servers/WLS_FORMS/security/boot.properties
$FORMSREPORTSDOMAIN/servers/WLS_REPORTS/security/boot.properties

$FORMSREPORTSDOMAIN/servers/WLS_PORTAL/security/boot.properties

---------------------------------------------------------------------------------------------------

Start:

#!/bin/sh


export MIDDLEWARE_HOME=/u01/app/oracle/product/Middleware
export FORMSREPORTSINSTANCE=/u01/app/oracle/product/Middleware/as_portal
export FORMSREPORTSDOMAIN=$MIDDLEWARE_HOME/user_projects/domains/PortalDomain
export WEBLOGICINSTANCE=$MIDDLEWARE_HOME/asinst_1

echo "Starting AdminServer"
nohup $FORMSREPORTSDOMAIN/startWebLogic.sh >/dev/null 2>/dev/null &

echo "Starting WLS_PORTAL"

nohup $FORMSREPORTSDOMAIN/bin/startManagedWebLogic.sh WLS_PORTAL  >/dev/null 2>/dev/null &

echo "Starting WLS_FORMS"

nohup $FORMSREPORTSDOMAIN/bin/startManagedWebLogic.sh WLS_FORMS  >/dev/null 2>/dev/null &

echo "Starting WLS_REPORTS"

nohup $FORMSREPORTSDOMAIN/bin/startManagedWebLogic.sh WLS_REPORTS  >/dev/null 2>/dev/null &

echo "Starting OPMN managed components"

$WEBLOGICINSTANCE/bin/opmnctl startall

---------------------------------------------------------------------------------------------------

Stop:

export MIDDLEWARE_HOME=/u01/app/oracle/product/Middleware

export FORMSREPORTSINSTANCE=/u01/app/oracle/product/Middleware/as_portal

export FORMSREPORTSDOMAIN=$MIDDLEWARE_HOME/user_projects/domains/PortalDomain

export WEBLOGICINSTANCE=$MIDDLEWARE_HOME/asinst_1

$WEBLOGICINSTANCE/bin/opmnctl stopall

nohup $FORMSREPORTSDOMAIN/bin/stopManagedWebLogic.sh WLS_PORTAL >/dev/null 2>/dev/null &

nohup $FORMSREPORTSDOMAIN/bin/stopManagedWebLogic.sh WLS_FORMS  >/dev/null 2>/dev/null &

nohup $FORMSREPORTSDOMAIN/bin/stopManagedWebLogic.sh WLS_REPORTS  >/dev/null 2>/dev/null &

nohup $FORMSREPORTSDOMAIN/bin/stopWebLogic.sh >/dev/null 2>/dev/null &

oracle.as.config.impl.SimpleProvisionException

ID:1218563.1

Unpublished Bug 9287845  PS2:CLASSIC:REPORTS SERVER COMPONENT CREATIONS FAILS DURING APACHE PREFLIGHT

Solution
1. Update/correct name resolution on the network such that the server's host name and IP address are unique.

Failed to assign port 8090: Address family not supported by protocol

ID 1113163.1

1. Backup the $MW_HOME//config/WebCache/webcache1/webcache.xml file.

2. Add the IPV6 ENABLED="NO" tag below the MULTIPORT 

How to clean up after a failed 11gr2 CRS install

http://gjilevski.com/2010/08/12/how-to-clean-up-after-a-failed-11g-crs-install-what-is-new-in-11g-r2-2/

PRVF-5637 - OEL 6.3

ID 1480242.1

On Redhat Linux 6 / Oracle Linux 6 (confirmed from 6.3), nslookup has return code "1" after nslookup failure instead of "0":

Oracle Linux 6:

$ nslookup unknown-not-reachable-node
Server:         10.35.249.52
Address:        10.35.249.52#53** server can't find unknown-not-reachable-node: NXDOMAIN
$ echo $?
1

Oracle Linux 5:

$ nslookup unknown-not-reachable-node
Server:         10.35.249.52
Address:        10.35.249.52#53** server can't find unknown-not-reachable-node: NXDOMAIN
$ echo $? 0

How To Setup ASM & ASMLIB On Native Linux Multipath Mapper disks?

ID 602952.1

update the /etc/sysconfig/oracleasm

ORACLEASM_SCANORDER="dm"
or
ORACLEASM_SCANORDER="mpath dm"