OSWatcher Black Box, 簡稱OSW，是oracle提供的一個小但是非常有用的工具，它通過調用OS自己提供的命令來記錄OS運行時的一些性能參數，比如CPU/Memory/Swap/Network IO/Disk IO相關的信息。
但是部署OSW有很多好處：
1. 它比較容易部署，並且容易刪除。
2. 資源消耗比較小，不管是從CPU，內存還是磁盤空間來說。
3. 平時不需要維護，並且在發生問題時可以幫我們迅速定位問題是否發生在OS端
數據庫是運行在OS之上的，如果OS發生了異常，那麼數據庫肯定也會受到影響；如果我們僅僅從數據庫的角度去分析這樣的問題時，很難有個好結果.
官方博客介紹如下：
1、下載
從MOS上裏的文檔301137.1上下載OSW，需要有MOS賬號
百度網盤：http://pan.baidu.com/s/1bYdzJ4
2、安裝
隨便找一個目錄解壓安裝，不要在/tmp目錄，不必須root用戶
[oracle@rhel6 ~]$ mkdir oswatcher [oracle@rhel6 ~]$ mv oswbb734.tar oswatcher/ [oracle@rhel6 ~]$ cd oswatcher/ [oracle@rhel6 oswatcher]$ ls oswbb734.tar [oracle@rhel6 oswatcher]$ tar -xvf oswbb734.tar oswbb/ oswbb/call_uptime.sh oswbb/profile/ oswbb/analysis/ oswbb/tar_up_partial_archive.sh oswbb/oswsub.sh oswbb/oswrds.sh oswbb/src/ oswbb/src/missing_graphic.gif oswbb/src/tombody.gif oswbb/src/coe_logo.gif oswbb/src/Thumbs.db oswbb/src/OSW_profile.htm oswbb/src/oswbba_input.txt oswbb/src/watch.gif oswbb/oswib.sh oswbb/call_du.sh oswbb/tarupfiles.sh oswbb/ltop.sh oswbb/nfssub.sh oswbb/docs/ oswbb/docs/OSWatcher/ oswbb/docs/OSWatcher/OSWatcherUserGuide.pdf oswbb/docs/OSWatcher/oswbb_README.txt oswbb/docs/The_Analyzer/ oswbb/docs/The_Analyzer/oswbba_README.txt oswbb/docs/The_Analyzer/oswbbaUserGuide.pdf oswbb/docs/The_Analyzer/OSWatcherAnalyzerOverview.pdf oswbb/OSWatcher.sh oswbb/psmemsub.sh oswbb/call_sar.sh oswbb/oswnet.sh oswbb/Exampleprivate.net oswbb/mpsub.sh oswbb/Example_extras.txt oswbb/OSWatcherFM.sh oswbb/startOSWbb.sh oswbb/ifconfigsub.sh oswbb/iosub.sh oswbb/oswbba.jar oswbb/vmsub.sh oswbb/xtop.sh oswbb/stopOSWbb.sh
OSWatcher包含兩部分：
oswbb：這是一個shell腳本，用於收集和存儲數據
oswbba：這是一個java工具用於分析收集到的數據並提供建議，還可以生成圖片或html文檔。
3、啓動OSWatcher
startOSWbb.sh腳本有四個參數：
ARG1 = snapshot interval in seconds.
ARG2 = the number of hours of archive data to store.
ARG3 = (optional) the name of a compress utility to compress each file automatically after it is created.
ARG4 = (optional) an alternate (non default) location to store the archive directory.
如果不輸入任何參數，默認間隔30秒收集一次數據，並且默認保存48小時的數據。
默認收集到的數據會存儲在解壓目錄下的archive目錄下，這個目錄是在第一次啓動startOSWbb.sh腳本時創建的。
#啓動startOSWbb.sh腳本，間隔15秒，保存5天的數據 [oracle@rhel6 oswbb]$ nohup sh startOSWbb.sh 15 120 & [1] 3131 [oracle@rhel6 oswbb]$ nohup: ignoring input and appending output to `nohup.out' [1]+ Done nohup sh startOSWbb.sh 15 120 #查看輸出日誌 [oracle@rhel6 oswbb]$ more nohup.out Setting the archive log directory to/home/oracle/oswatcher/oswbb/archive Testing for discovery of OS Utilities... VMSTAT found on your system. IOSTAT found on your system. MPSTAT found on your system. IFCONFIG found on your system. NETSTAT found on your system. TOP found on your system. Testing for discovery of OS CPU COUNT oswbb is looking for the CPU COUNT on your system CPU COUNT will be used by oswbba to automatically look for cpu problems CPU COUNT found on your system. CPU COUNT = 2 Discovery completed. #生成的archive目錄下生成了對應不同收集信息的目錄 [oracle@rhel6 oswbb]$ cd archive [oracle@rhel6 archive]$ ls oswifconfig oswiostat oswmeminfo oswmpstat oswnetstat oswprvtnet oswps oswslabinfo oswtop oswvmstat
MOS文檔 ID 1531223.1有詳細的介紹各個目錄的含義。
在OSWbb第一次使用時，它會創建一些歸檔的子目錄。 這些歸檔目錄包含7個子目錄，每一個子目錄對應一個收集數據。 這7個目錄分別對應：top, vmstat, iostat, mpstat, netstat, ps 和一個可選的traceprivate network。
要啓動private network，必須先在oswbb目錄下創建一個private.net的可執行文件。 這個文件裏的內容可以是用來驗證RAC private network的traceroute命令，不同平臺使用traceroute命令的參數不盡相同，private.net文件可以可以根據Exampleprivate.net文件來修改創建。
HP-UX的一個例子
###################################################################### #HP Example ###################################################################### echo "zzz ***"`date` traceroute -r -F 192.168.2.21 traceroute -r -F 192.168.2.22 ###################################################################### # DO NOT DELETE THE FOLLOWING LINE!!!!!!!!!!!!!!!!!!!!! ###################################################################### rm locks/lock.file
4、分析OSWatcher收集到的日誌
使用oswbba.jar包進行日誌的分析，但是jara要在1.4.2及以上版本。
兩種方法分析數據
1)生成圖形
[oracle@rhel6 oswbb]$ export DISPLAY=192.168.56.1:0.0 [oracle@rhel6 oswbb]$ java -jar oswbba.jar -i archive Starting OSW Analyzer V7.3.3 OSWatcher Analyzer Written by Oracle Center of Expertise Copyright (c) 2014 by Oracle Corporation Parsing Data. Please Wait... Scanning file headers for version and platform info... Parsing file rhel6_iostat_16.12.19.1100.dat ... Parsing file rhel6_vmstat_16.12.19.1100.dat ... Parsing file rhel6_netstat_16.12.19.1100.dat ... Parsing file rhel6_top_16.12.19.1100.dat ... Parsing file rhel6_ps_16.12.19.1100.dat ... Parsing Completed. Enter 1 to Display CPU Process Queue Graphs Enter 2 to Display CPU Utilization Graphs Enter 3 to Display CPU Other Graphs Enter 4 to Display Memory Graphs Enter 5 to Display Disk IO Graphs Enter 6 to Generate All CPU Gif Files Enter 7 to Generate All Memory Gif Files Enter 8 to Generate All Disk Gif Files Enter L to Specify Alternate Location of Gif Directory Enter T to Alter Graph Time Scale Only (Does not change analysis dataset) Enter D to Return to Default Graph Time Scale Enter R to Remove Currently Displayed Graphs Enter A to Analyze Data Enter S to Analyze Subset of Data(Changes analysis dataset including graph time scale) Enter P to Generate A Profile Enter X to Export Parsed Data to File Enter Q to Quit Program Please Select an Option:7 Generating file gif/Dec19110157_1482117313/OSWg_OS_Memory_Swap.gif Generating file gif/Dec19110157_1482117313/OSWg_OS_Memory_Free.gif Generating file gif/Dec19110157_1482117313/OSWg_OS_Memory_Page_In_Rate.gif
2)生成報告
[oracle@rhel6 oswbb]$ java -jar oswbba.jar -i archive -A Scanning file headers for version and platform info... Parsing file rhel6_iostat_16.12.19.1100.dat ... Parsing file rhel6_vmstat_16.12.19.1100.dat ... Parsing file rhel6_netstat_16.12.19.1100.dat ... Parsing file rhel6_top_16.12.19.1100.dat ... Parsing file rhel6_ps_16.12.19.1100.dat ... Dates accepted. Verifying valid begin/end data points... Validating times in the archive... Recalibrating data... Scanning file headers for version and platform info... Parsing file rhel6_iostat_16.12.19.1100.dat ... Parsing file rhel6_vmstat_16.12.19.1100.dat ... Parsing file rhel6_netstat_16.12.19.1100.dat ... Parsing file rhel6_top_16.12.19.1100.dat ... Parsing file rhel6_ps_16.12.19.1100.dat ... A new analysis file analysis/rhel6_1482117679897.txt has been created. #生成的分析報告在analysis目錄中 [oracle@rhel6 oswbb]$ more analysis/rhel6_1482117679897.txt This report is best viewed in a fixed font editor like textpad... OSWatcher Analyzer Input Archive: archive Archive Source Dest: /home/oracle/oswatcher/oswbb/archive Archive Start Time: Dec 19 11:01:57 2016 Archive Stop Time: Dec 19 11:20:59 2016 Hostname: RHEL6 OS Version: Linux Snapshot Freq: 15 CPU COUNT: 2 ...... Subsystem Status ------------------------ CPU OK MEMORY OK I/O WARNING NET OK ......
MOS文檔 ID 461053.1有詳細介紹使用分析工具。