生產(chǎn)環(huán)境強烈建議安裝部署
Introduction

OSWatcher (oswbb) is a collection of UNIX shell scripts intended to collect and archive operating system and network metrics to aid support in diagnosing performance issues. As a best practice, all customers should install and run OSWatcher on every node that has a running Oracle instance. In the case of a performance issue, Oracle support can use this data to help diagnose performance problems which may outside the database. OSWatcher can be downloaded from MOS Note 301137.1 . Installation instructions for OSWatcher are provided in this user guide.

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具體安裝過程看文檔，301137.1

Installation

The following sections describe how to install and remove OSWatcher on your system..

Installing oswbb

OSWatcher can be installed as any user as long as that user has permission to execute the underlying Unix utilities such as vmstat, top, etc. In most cases you can install as the Oracle user. OSWatcher needs to be installed on each node if you are running in a RAC environment, one installation per node. Install by using the following procedure:

Downloaded the oswbb.tar file from MOS. Place the tar file is the desired location and untar the file. Next, make sure to change the file permissions on these files to execute by using chmod.

tar xvf oswbb.tar

chmod 744 *

A directory named oswbb will be created which contains the full installation of OSWatcher including the OSWatcher analyzer and all supporting files. OSWatcher is now installed.

Uninstalling oswbb

To uninstall OSWatcher issue the following command on the oswbb directory.

rm -rf oswbb

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Configuration

OSWatcher collects and stores data to files in an archive directory. By default, this directory is created under the oswbb directory where oswbb is installed. There are 2 options if you want to change this location to point to any other directory or device.

1. set the UNIX environment variable OSWBB_ARCHIVE_DEST to the location desired before starting the tool. In this example the archive directory will be created in this location (/usr/app/archive) and not created under the home oswbb directory

export OSWBB_ARCHIVE_DEST=/usr/app/archive

2. start oswbb by running the startOSWbb.sh script located in the directory where oswbb is installed and specify the 4th parameter on the command line.

./startOSWbb 30 48 None /usr/app/archive

This script accepts an optional 4th parameter which is the location where you want oswbb to write the the data it collects. If you use the optional 4th parameter you must also set the optional 3rd parameter which specifies the name of a compress or zip(gzip,compress, etc) utility. If you do not want to compress the files you can specify NONE as the 3rd parameter. See the startOSWbb.sh for more details.

OSWbb writes the archive location to a heartbeat file named osw.hb in the /tmp directory. This is done so other oracle utilities like RAC-DDT and RDA can find OSWbb data when these utilities are run. This file gets removed when OSWatcher is stopped.

Once oswbb is installed, scripts have been provided to start and stop the oswbb utility. When oswbb is started for the first time it creates the archive subdirectory, either in the default location under the oswbb directory or in an alternate location as specified above. The archive directory contains a minimum of 7 subdirectories, one for each data collector. Private networks can be monitored by using the traceroute command. This is done automatically in release 8 of OSWatcher. This can also be done manually by the user by creating an executable file in the oswbb directory named private.net. An example of what this file should look like is named Exampleprivate.net with samples for each operating system: Solaris, LINUX, AIX, and HP-UX in the oswbb directory. This file can be edited and renamed private.net or a new file named private.net can be created. This file contains entries for running the traceroute command to verify RAC private networks.

Exampleprivate.net entry on Solaris:

traceroute -r -F private_nodename

Where node1 and node2 are 2 nodes in addition to the hostnode of a 3 node RAC cluster. If the file private.net does not exist or is not executable then no data will be collected and stored under the oswprvtnet directory.

oswbb will need access to the OS utilities: top, vmstat, iostat, mpstat, netstat, and traceroute. These OS utilities need to be installed on the system prior to running oswbb.  Execute permission on these utilities need to be granted to the user of oswbb.

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RAC Considerations

OSWbb needs to be installed on each node in the cluster. If installing on a shared file system then install each node's OSWbb into a unique directory.

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