Unless you’ve been hiding under a rock for the last couple of years, you cannot help but to have heard about Web Services. According to the industry experts, whoever they are, Web Services will solve every problem you have ever had and ever will have in your quest to send and receive data from one computer to another over the Web. And while that may be a bit of an overstatement, it is true that Web Services really do make communicating with another computer system on the Web very easy. In this article I am going to show you how

As enthusiastic as I am about SQL, I am not ready to abandon the native DB2-for-i interfaces. There are a few things that DDS and native I/O op codes do that SQL doesn’t handle as well. However, in V6R1 IBM has eliminated one of the DDS advantages.

A logical file can do three tasks: it can define a record format to be a set of fields, it can define a data set to be a set of records, and it can create an access path over the data. SQL needs two commands. CREATE VIEW handles the first two tasks, and

The next time you order a Power i upgrade, pay special attention to the redundant components that are available. As the computing world moves toward more and more redundancy options, many 24×7 i5/OS shops are requiring absolute redundancy in almost everything available. This week, I’ll look at some of the redundancy options available for i5/OS machines and how they can help your shop.

Basic Redundancy

The math of redundancy is simple. If it costs 10 percent more to install redundant components, for example, how much will that save the company if it keeps a critical system running during a busy

Some time ago, we had problems with Client Access sessions being reset. It seemed that these connections were traveling over a VPN that got disconnected after being idle for a while. Because we were not in charge of the VPN, I used TCP keepalive as a workaround for this problem.

Keepalive

A TCP connection can set the SO_KEEPALIVE option with the setsockopts() system call. When the TCP connection is idle for a specified period of time, a keepalive packet will be sent to keep the connection open. (In practice, this keepalive packet is a request for acknowledgement of the previous

I want to call from CL program a REXX program, where the REXX program returns a calculate of date (yymmdd). Do you have an example you could send me?

Thanks in advance,

–Larry

Larry,

REXX can’t directly return a value to CL the way other languages do. You’d have to have your REXX procedure write the data to a file or use the REXX External Data Queue.

To use a file you’d have to first override STDOUT to a file of your choice, then use “SAY” to write the data. In your REXX procedure you could do this:

'OVRDBF FILE(STDOUT) 

In this week’s article, I’m presenting a high-level overview of the Power i, System i, and the iSeries system attention indicator light, which is activated when the system detects a problem. While it may be mundane to concentrate on how the system alerts you when something goes wrong, this information can come in handy when that little amber light blinks on and you’re not sure what to do.

Where Is the System Attention Light?

You can generally find the system attention indicator light (SA light) on the System Unit panel near the green power light, although the location varies by