Version
That version (5.1.0) is EOL even for commercial customers with standard support. You are entitled to free upgrades as part of your newly-acquired purchase.
| Release | Release Date | End of Core Support | |
|---|---|---|---|
| DirectControl 5.3.0 | December 2015 | December 2018 | |
| DirectControl 5.2.3 | July 2015 | July 2018 | |
| DirectControl 5.2.2 | February 2015 | February 2018 | |
| DirectControl 5.2.0 – 5.2.1 | August 2014 | August 2017 | |
| DirectControl 5.1.3 | January 2014 | January 2017 | |
| DirectControl 5.1.1 – 5.1.2 | July 2013 | July 2016 | |
| DirectControl 5.1.0 | January 2013 | January 2016 |
The reason why I point that out is that IT folks have responsibilities to Security as it relates to try to maintain systems with current versions.
Better ways to do things
If you have the for-pay version, plan to use DirectAuthorize and move-on for the parameter-based (harder-to-manage) methods.
Your problem
My advice is that you open a ticket with support if this one is covered by your existing maintenance contract. They will collect logs and provide you with a better answer.
Note: If you say that the server was working and suddenly this happened, I'd like to happen what happened in-between the failure.
- Was an AIX patch applied?
- Was a configuration change made?
This all sounds environmental to me.
Finally, my advice stands. I know it's hard with how tight IT departments are running, but you are better off upgrading from that version.