Hello, I would like to share all findings. 1. Try to remove all unused environment variables to give more memory for command line arguments. 2. Increase ARG_MAX value. Restricted solution since root is required to do that. 3. Use option @file. 4. Use option –specs=<file>. 5. Use C_PATH and others variables.. In our case option #4 was the best solution. Thanks, Vasily.