statute of limitations debt oklahoma

What is the name of your state? Oklahoma I was a cosigner on a business equip note and revolving line of credit in 1997, other cosigner declared bankruptcy in july 2001, discharged in sept 2001, dispute over disposition of equipment with bank who later abandoned, no collection action by bank so far, how long does the statute of limitations run and what constitutes collection action? Your input greatly appreciated.

[JETX]

"how long does the statute of limitations run"
** Statute of Limitations in OK for a written contract (assumed) is 5 years.

"and what constitutes collection action?"
** Any attempt to collect on the account.

Thank You very much.