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sessions are still running by using the following command, which I explained earlier in the Checking Whether the iSQL*Plus Application Server Is Running section: $ ps -eaf |grep Djava If the previous command indicates that an iSQL*Plus process is still running, use the following command to kill the process: $ $ORACLE_HOME/bin/isqlplusctl stop If the previous command fails to kill the iSQL*Plus process, use the UNIX/Linux kill command, as shown here: $ kill -9 <process_id> Restart the iSQL*Plus process, using the following command: $ $ORACLE_HOME/bin/isqlplusctl start If you re still having problems starting up the iSQL*Plus session, it s time to clear the RMI and HTTP ports, and one way to do so is by using the lsof utility, as shown here: $ lsof -i:5560 If you see a lot of processes using port 5560, kill them using the following command, which uses the lsof utility and pipes its results to the kill command directly: $ lsof -i:5560 | grep -v PID | awk '{print $2}' | xargs kill -9

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cat somefile | while read line do # Process the $line variable in some form. if [ "`echo $line | awk '{print $3}'`" = "somevalue" ] then all="$all $line" fi done

Your iSQL*Plus Application Server may not start up if the port it s supposed to be using (5560 by default) is already in use. You can confirm this by using the netstat command. If you need to change the port number for the iSQL*Plus Application Server, use the following steps, after making sure the iSQL*Plus Application Server is stopped first: 1. Edit the configuration file, which is named http-web-site.xml and is located in the ORACLE_HOME/oc4j/j2ee/isqlplus/config directory. Change the port number (for example, port="5560") to the port number you wish to use. 2. Restart the iSQL*Plus Application Server like this: $ isqlplusctl start

Using String::Concat directly or indirectly to concatenate many strings to a new string can easily end up in poor performance For every concatenation, a new object has to be allocated on the.

You can also start an iSQL*Plus session from a URL. Here s an example: http://localhost.localdomain:5560/isqlplus/dba/dynamic userid=hr/hr@orcl%20as%20sysdba&script=testscript.sql&name=*&salary=12000 This is just a test URL, to show you how to specify the script name, username/password combination, and the connect identifier when you connect. Of course, you d enter the two lines as one unbroken URL in your web browser.

You can connect to remote databases just as you do from SQL*Plus, by either specifying the remote database in the tnsnames.ora file, or by using the easy connect method. If you wish, you can specify the entire connection identifier in the URL. By using the iSQLPlusConnectIdList parameter, you can restrict connections to a limited set of databases. Here s an example that shows how you can connect to a remote database using the complete database connection string: <href='http://localhost.localdomain:5560/isqlplus userid="hr/hr@ (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost) (PORT=1521)))(CONNECT_DATA=(SID=orcl)))" &script=http://localhost/scripts/report.sql'> iSQL*Plus Dynamic Report</a> Using this URL, you can create a link in your HTML pages to run a dynamic report using iSQL*Plus.

Once you log in to the iSQL*Plus interface, there are several ways to navigate inside. You can move to other screens in the following ways: Navigation icons: When you first log in, you ll see three navigations icons: Logout, Preferences, and Help. These are located in the top right of your current screen, and you can click them to go to a different screen. Menus: The menus let you navigate to screens such as Preferences. Footer links: Navigation links to other screens are at the bottom of each page.

If everything within the loop is self-contained and none of the variables in it are accessed outside the loop, this will work fine. However, the bash code parsed each line in the output of the piped command, and populated some variables based on that output. Once the loop completed, I wanted to access those values ($all in this example) for other purposes, and found that they were undefined. The following code is the first workaround that I found to overcome the problem. Unfortunately it isn t quite as elegant or intuitive as the original code because it uses a temporary file. To keep the code clean I try to avoid using temporary files, but in this case I had no choice.