PHP on tomcat6 in ubuntu /Linux

Came across a need where we needed to install PHP on tomcat6 on ubuntu.
After many unsuccessful attempts was able to finally get it going
Here are the steps I followed
1. install php5 on unbuntu sudo apt-get install php5
2. install tomcat on ubuntu
3. install php-cgi sudo apt-get install php5-cgi
4. install php-gd sudo apt-get insatall php5-gd

Once this is done
download the JavaBridge.jar , php-script.jar , php-servlet.jar . These are easily available on sourceforge.net .

Copy all these jars in the %tomcat%/lib folder.
change the %tomcat%/conf web.xml for the php java an php servlet ampping

-- these are the mapping for enabling the php on tomcat--
<listener>
<listener-class>php.java.servlet.ContextLoaderListener</listener-class>
</listener>

<servlet>
<servlet-name>PhpJavaServlet</servlet-name>
<servlet-class>php.java.servlet.PhpJavaServlet</servlet-class>
</servlet>

<servlet>
<servlet-name>PhpCGIServlet</servlet-name>
<servlet-class>php.java.servlet.fastcgi.FastCGIServlet</servlet-class>
<init-param>
<param-name>prefer_system_php_exec</param-name><param-value>On</param-value></init-param>
<init-param>
<param-name>php_include_java</param-name><param-value>Off</param-value></init-param>
</servlet>

<servlet-mapping>
<servlet-name>PhpJavaServlet</servlet-name>
<url-pattern>*.phpjavabridge</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>PhpCGIServlet</servlet-name>
<url-pattern>*.php</url-pattern>
</servlet-mapping>

restart your tomcat.. and this should be it...
shoot me any questions if you have any

Ubuntu 10.04

Have used ubunutu(several releases) for quite some time. Few things I had difficulty with were
1. installing sun java 1.5 with ubuntu 10.04. Since th default jdk/jre is 1.6 you will have to remove that first, then add the jaunty repositories for java in sources.lst and then refresh then try to install the jdk/jre 1.5. The key is some of your application software requires java 1.5 and having two set of java/jdk does conflict when some of the program by default uses java 1.6 during its installation and then during run time we force it to use jaav 1.5 by update-alternatives --config java.

2. VPN- This gave me quite some sleepless nights to configure, but then i found out openconnect . This has compatibility wiht cisco any connect(which is often used by lots of ppl) and is much more easier to configure than cisco client. No changes to mozilla files etc in this.





..Waiting for people to switch over to Linux...

ResultSet Max Rows

The setMaxRows method of the ResultSet specifies how many rows a ResultSet can contain at a time. If there are 1000 eligible records in DB and setMaxRows has a value 100, so only 100 records would be loaded in ResultSet.
This can be particularly useful when we wish to limit the number of rows from DB.

Result Set Fetch Size

setFetchSize() in resultSet and Statement.
Both ResultSet and Statement have the SetFetchSize method. When used in the Statement all of the ResultSets returned by that Statement will have the same fetch size.
SetFetchSize determines the amount of data blocks or rows that should be carried to the client from the server after executing a statement.

Advantanges of using setFetchSize().
I did a comparitive study aout the impact of setting the fetch size when executing a query that resulted in about 1k records.
DB: Oracle 10g
Driver: oracle thin
Java version: 5
The database server was not in the local network.

FetchSize	Time in entire processing:
Default:0	31897ms
10	31476ms
100	6858ms
500	5514ms

The advantage is self evident.

Windows Access Commands

Accessibility Controls	access.cpl
Add Hardware Wizard	hdwwiz.cpl
Add/Remove Programs	appwiz.cpl
Administrative Tools	control admintools
Automatic Updates	wuaucpl.cpl
Bluetooth Transfer Wizard	fsquirt
Calculator	calc
Certificate Manager	certmgr.msc
Character Map	charmap
Check Disk Utility	chkdsk
Clipboard Viewer	clipbrd
Command Prompt	cmd
Component Services	dcomcnfg
Computer Management	compmgmt.msc
Date and Time Properties	timedate.cpl
DDE Shares	ddeshare
Device Manager	devmgmt.msc
Direct X Control Panel (If Installed)*	directx.cpl
Direct X Troubleshooter	dxdiag
Disk Cleanup Utility	cleanmgr
Disk Defragment	dfrg.msc
Disk Management	diskmgmt.msc
Disk Partition Manager	diskpart
Display Properties	control desktop
Display Properties	desk.cpl
Display Properties (w/Appearance Tab Preselected)	control color
Dr. Watson System Troubleshooting Utility	drwtsn32
Driver Verifier Utility	verifier
Event Viewer	eventvwr.msc
File Signature Verification Tool	sigverif
Findfast	findfast.cpl
Folders Properties	control folders
Fonts	control fonts
Fonts Folder	fonts
Free Cell Card Game	freecell
Game Controllers	joy.cpl
Group Policy Editor (XP Prof)	gpedit.msc
Hearts Card Game	mshearts
Iexpress Wizard	iexpress
Indexing Service	ciadv.msc
Internet Properties	inetcpl.cpl
IP Configuration (Display Connection Configuration)	ipconfig /all
IP Configuration (Display DNS Cache Contents)	ipconfig /displaydns
IP Configuration (Delete DNS Cache Contents)	ipconfig /flushdns
IP Configuration (Release All Connections)	ipconfig /release
IP Configuration (Renew All Connections)	ipconfig /renew
IP Configuration (Refreshes DHCP & Re-Registers DNS)	ipconfig /registerdns
IP Configuration (Display DHCP Class ID)	ipconfig /showclassid
IP Configuration (Modifies DHCP Class ID)	ipconfig /setclassid
Java Control Panel (If Installed)	jpicpl32.cpl
Java Control Panel (If Installed)	javaws
Keyboard Properties	control keyboard
Local Security Settings	secpol.msc
Local Users and Groups	lusrmgr.msc
Logs You Out Of Windows	logoff
Microsoft Chat	winchat
Minesweeper Game	winmine
Mouse Properties	control mouse
Mouse Properties	main.cpl
Network Connections	control netconnections
Network Connections	ncpa.cpl
Network Setup Wizard	netsetup.cpl
Notepad	notepad
Nview Desktop Manager (If Installed)	nvtuicpl.cpl
Object Packager	packager
ODBC Data Source Administrator	odbccp32.cpl
On Screen Keyboard	osk
Opens AC3 Filter (If Installed)	ac3filter.cpl
Password Properties	password.cpl
Performance Monitor	perfmon.msc
Performance Monitor	perfmon
Phone and Modem Options	telephon.cpl
Power Configuration	powercfg.cpl
Printers and Faxes	control printers
Printers Folder	printers
Private Character Editor	eudcedit
Quicktime (If Installed)	QuickTime.cpl
Regional Settings	intl.cpl
Registry Editor	regedit
Registry Editor	regedit32
Remote Desktop	mstsc
Removable Storage	ntmsmgr.msc
Removable Storage Operator Requests	ntmsoprq.msc
Resultant Set of Policy (XP Prof)	rsop.msc
Scanners and Cameras	sticpl.cpl
Scheduled Tasks	control schedtasks
Security Center	wscui.cpl
Services	services.msc
Shared Folders	fsmgmt.msc
Shuts Down Windows	shutdown
Sounds and Audio	mmsys.cpl
Spider Solitare Card Game	spider
SQL Client Configuration	cliconfg
System Configuration Editor	sysedit
System Configuration Utility	msconfig
System File Checker Utility (Scan Immediately)	sfc /scannow
System File Checker Utility (Scan Once At Next Boot)	sfc /scanonce
System File Checker Utility (Scan On Every Boot)	sfc /scanboot
System File Checker Utility (Return to Default Setting)	sfc /revert
System File Checker Utility (Purge File Cache)	sfc /purgecache
System File Checker Utility (Set Cache Size to size x)	sfc /cachesize=x
System Properties	sysdm.cpl
Task Manager	taskmgr
Telnet Client	telnet
User Account Management	nusrmgr.cpl
Utility Manager	utilman
Windows Firewall	firewall.cpl
Windows Magnifier	magnify
Windows Management Infrastructure	wmimgmt.msc
Windows System Security Tool	syskey
Windows Update Launches	wupdmgr
Windows XP Tour Wizard	tourstart
Wordpad	write

Garbage Collection of String literals

Tapan/Saurabh
Your thoughts on this--Does the GC handle the String literals. Since the String literals are interned,Does this mean that GC would not collect these string literals. If it does how/when?
--Ramraj

GC: JAVA 1.4

There are 3-4 algos specified by jvm 1.4 specifications. namely
reference counting
tracing
stop n copy
generational.
mark n sweep
Does JVM spec say that any of the above algo has the advantage over the other and the situations when one should be used and how do we use any one of them. Do we specify them somewhere as JAVA_OPTIONS?

--This is the first post. I'll detail about this thing later on.This post would serve as a startup for our blogs.