fopen() does not seem to work

[Anon]

Hello,
My name is Shammi Khattar, and am working with Verizon, Tampa.
I am working on Solaris 2.6(UNIX)/ with SunWspro C Compiler/ C /Oracle 8etc.

In my code after (heavy) processing, if I try to open a new file, the file is being made, but with 0 bytes, and fopen returns NULL.

I have searched this site for the problem,and it seems that it's been posted before, but could not get the solution somehow.

I am using the simple syntax
fopen(fpErr,"a+");

where fpErr is declared extern:
extern FILE *fpErr;

I would really appreciate, if some body on the forum could help me out on this issue. Please reply at the earliest (its kind of urgent )!!

Thanks and regards,
Shammi.

[Anon]

First I'll assume you have write rights and can write before any heavy processing.

Given that, there are two possibilities I can think of, one is you've run the OS out of file handles (note that a database backend can do this for you, as well as some other system processes.) the other is that the disk is full for a while after heavy processing (log files?) or something like that.

It's likely you'll have to look for some sun specific tweaks to increase file handles or shared memory or something like that.