In this blog post, let’s learn about the error message “145 ISAM error: system does not have disk mirroring.” in Hydra and the description of the error.
Error Message
145 ISAM error: system does not have disk mirroring.
Error Details
The database server has detected an impending deadlock between your request and other, concurrent user requests. Each user request is waiting for a resource (a row or disk page) that is held by another request in the chain; if your requested operation went forward, the chain would be closed and all requests would be deadlocked. In the short term, treat this error the same as -107 (record is locked). Roll back the current transaction, and re-execute it after a delay. To prevent recurrence, review the design of the applications that use the same tables and execute concurrently. Various design strategies can minimize the probability of deadlock.
When INFORMIX-STAR is active, and your application is using tables in both this system and another system, deadlock detection is no longer deterministic but probabilistic, based on the duration of a delay waiting for resources in another system. The database server administrator can set the length of the delay after which deadlock is assumed.