Dell PowerEdge Bedienungsanleitung

Dell PowerEdge Systems

Oracle Database on

Enterprise Linux x86_64

Troubleshooting Guide

Version 4.4

Notes and Cautions

NOTE: A NOTE indicates important information that helps you make better use of

your computer.

CAUTION: A CAUTION indicates potential damage to hardware or loss of data if

instructions are not followed.

____________________

Information in this publication is subject to change without notice.

Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc.

is strictly forbidden.

Trademarks used in this text: Dell™, the DELL™ logo, PowerEdge™, and PowerVault™ are

trademarks of Dell Inc.; EMC®and PowerPath®are trademarks of EMC Corporation; Intel®,

Pentium®, and Celeron®are registered trademarks of Intel Corporation in the U.S. and other countries;

Oracle®is a registered trademark of Oracle Inc. in the US and other countries; Red Hat®and Red Hat

Enterprise Linux®are registered trademarks of Red Hat, Inc. in the U.S. and other countries.

Other trademarks and trade names may be used in this publication to refer to either the entities claiming

the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and

trade names other than its own.

July 2010 Rev. A02

Contents 3

Contents

1Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Required Documentation for Deploying

the Dell Oracle Database . . . . . . . . . . . . . . . . . 7

Terminology Used in this Document. . . . . . . . . . . . 8

Getting Help . . . . . . . . . . . . . . . . . . . . . . . . 8

Dell Support. . . . . . . . . . . . . . . . . . . . . . 8

2Troubleshooting . . . . . . . . . . . . . . . . . . . . . 9

Performance and Stability. . . . . . . . . . . . . . . . . 9

Enterprise Linux exhibits poor performance

and instability; excessive use of swap space . . . . 9

Unknown interface-type warning appears in the

Oracle alert file; poor system performance . . . . . 9

Enterprise Manager . . . . . . . . . . . . . . . . . . . 10

The Enterprise Manager agent fails . . . . . . . . 10

Oracle Clustered File System2 (OCFS2) . . . . . . . . . 10

System hangs while mounting or

unmounting OCFS partitions . . . . . . . . . . . . 10

Network Configuration Assistant (NETCA) . . . . . . . 11

NETCA fails, resulting in database

creation errors . . . . . . . . . . . . . . . . . . . 11

NETCA cannot configure remote nodes

or a RAW device validation error occurs

while running DBCA . . . . . . . . . . . . . . . . 11

4Contents

Cluster Ready Services (CRS) . . . . . . . . . . . . . . 11

CRS fails prematurely when trying to start . . . . . 11

The Oracle Clusterware installation

procedure fails . . . . . . . . . . . . . . . . . . . 11

CRS fails to start when you reboot the nodes,

or after entering /etc/init.d/init.crs start . . . . . . 12

When you run root.sh, CRS fails to start . . . . . . 12

Node continuously reboots . . . . . . . . . . . . . 14

CRS fails to start when you reboot the nodes,

or after entering /etc/init.d/init.crs start . . . . . . 15

Database Configuration Assistant (DBCA) . . . . . . . 16

There is no response when you click OK in

the DBCA Summary window . . . . . . . . . . . . 16

Miscellaneous . . . . . . . . . . . . . . . . . . . . . . 16

You receive dd failure error messages

while installing the software using

Dell Deployment CD 1 . . . . . . . . . . . . . . . . 16

When connecting to the database as a user

other than oracle, you receive the error

messages ORA01034: ORACLE not available

and Linux Error 13: Permission denied . . . . . . . 16

Installation . . . . . . . . . . . . . . . . . . . . . . . . 17

Oracle software fails to install on the nodes . . . . 17

When you run root.sh, the utility fails to

format the OCR disk . . . . . . . . . . . . . . . . . 17

Networking. . . . . . . . . . . . . . . . . . . . . . . . 17

The cluster verification check fails . . . . . . . . . 17

Fibre Channel Storage System . . . . . . . . . . . . . . 18

You receive I/O errors and warnings when

you load the Fibre Channel HBA driver module . . 18

Contents 5

Operating System . . . . . . . . . . . . . . . . . . . . 18

When you add a new peripheral device to

your Dell PowerEdge system, the operating

system does not recognize the device . . . . . . . 18

Using Dell DKMS Drivers

After Upgrading the Kernel . . . . . . . . . . . . . 18

3Oracle Security Patches and

Recommended Patches . . . . . . . . . . . . . 19

Critical Patch Updates. . . . . . . . . . . . . . . . . . 19

Recommended Patches . . . . . . . . . . . . . . . . . 19

6Contents

Overview 7

Overview

The Oracle Database on Linux Advanced Server Troubleshooting Guide

applies to Oracle Database 10g R2 running on Red Hat Enterprise Linux

or Oracle Enterprise Linux 5.5 AS x86_64.

Required Documentation for Deploying the

Dell Oracle Database

The Dell|Oracle Database Installation Documentation set is organized into a

series of modules. These modules cover the following topics:

•

Dell PowerEdge Systems Oracle Database on Enterprise Linux x86_64-

Operating System and Hardware Installation Guide

—Describes the

required minimum hardware and software versions, how to install and

configure the operating system, how to verify the hardware and software

configurations, and how to obtain open source files.

•

Dell PowerEdge Systems Oracle Database on Enterprise Linux x86_64-

Storage and Network Guide

—Describes how to install and configure the

network and storage solutions.

•

Dell PowerEdge Systems Oracle Database on Enterprise Linux x86_64-

Database Setup and Installation Guide

—Describes how to install and

configure the Oracle database.

•

Dell PowerEdge Systems Oracle Database on Enterprise Linux x86_64-

Troubleshooting Guide

—Describes how to troubleshoot and resolve errors

encountered during the installation procedures described in the

previous modules.

All modules provide information on how to receive technical assistance

from Dell.

8Overview

Terminology Used in this Document

This document uses the terms logical unit number (LUN) and virtual disk.

These terms are synonymous and can be used interchangeably. The term

LUN is commonly used in a Dell/EMC Fibre Channel storage system

environment and virtual disk is commonly used in a Dell Power Vault SAS

and iSCSI (Dell MD3000 and Dell MD3000i with MD1000 expansion)

storage environment.

This document uses the term Enterprise Linux that applies to both

Red Hat Enterprise Linux and Oracle Enterprise Linux unless

stated specifically.

Getting Help

This section provides information on contacting Dell or Oracle for

whitepapers, supported configurations, training, technical support,

and general information.

Dell Support

• For detailed information about using your system, see the documentation

that came with your system components.

• For whitepapers, Dell-supported configurations, and general information,

see the Dell|Oracle Tested and Validated Configurations website at

dell.com/oracle

Troubleshooting 9

Troubleshooting

This section provides recommended actions for problems that you

may encounter while deploying and using your Enterprise Linux and

Oracle software.

Performance and Stability

Enterprise Linux exhibits poor performance and instability;

excessive use of swap space

When Oracle System Global Area (SGA) exceeds the recommended size,

Enterprise Linux exhibits poor performance. Always ensure that the SGA size

does not exceed 65% of the total system RAM. To decrease the SGA size:

Enter free at a command prompt to determine the total RAM and reduce

the values of db_cache_size and shared_pool_size parameters in the Oracle

parameter file accordingly.

Unknown interface-type warning appears in the Oracle alert file;

poor system performance

The problem occurs when the public interface is configured as cluster

communications (private interface).

Perform the following steps on one node to force cluster communications to

the private interface:

oracle

Enter

sqlplus "/ as sysdba"

at the command prompt.

The

SQL>

prompt appears.

Enter the following lines at the

SQL>

prompt:

alter system set cluster_interconnects=<private

IP address node1>’ scope=spfile sid=’<SID1>’

alter system set cluster_interconnects =

’<private IP address node2>’ scope=spfile sid=

’<SID2>’

10 Troubleshooting

Create these entries for each node in the cluster.

Restart the database on all nodes by entering the

following commands:

srvctl stop database –d <dbname>

srvctl start database –d <dbname>

Open the

/opt/oracle/admin/<dbname>/bdump/alert_<SID>.log

file, and verify that the private IP addresses are being used for all

instances.

Enterprise Manager

The Enterprise Manager agent fails

The Enterprise Manager fails when the Enterprise Manager repository is

not populated.

Enter the following to re-create the configuration file and repository for the

Database Console:

emca -config dbcontrol db repos recreate

For detailed instructions, see the Oracle Metalink Note # 330976.1.

Oracle Clustered File System2 (OCFS2)

System hangs while mounting or unmounting OCFS partitions

The problem occurs when OCFS partitions are unmounted on two nodes at

exactly the same time.

CAUTION: Do not reboot more than one system at the same time.

NOTE: It is not recommended to restart the network on a live node. When trying to

restart the network service from any live node in the cluster, the node hangs

indefinitely. This behavior is expected for OCFS2.

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