It's a page corruption problem in Sybase. This is a bad thing. A lot of things could cause it.
- Some sort of bad operating system interaction. Eg. some other process modifying the devices/files Sybase is using to write it's data. Or maybe you have your Sybase devices on NFS?
- One of your disks is physically bad. Do you have disk mirroring at the operating system level or within Sybase?
- Or maybe the box was shutdown while the server was busy writing data?
- Maybe a backup was loaded into the wrong chunks in a destination database?
- You hit a Sybase bug? Do you have any stacktraces in Sybase before the 692 error(s)