onmode -O: Override ONDBSPACEDOWN WAIT mode

Use the onmode -O option only in the following circumstances:

• ONDBSPACEDOWN is set to WAIT.
• A disabling I/O error occurs that causes the database server to block all updating threads.
• You cannot or do not want to correct the problem that caused the disabling I/O error.
• You want the database server to mark the disabled dbspace as down and continue processing.

When you execute this option, the database server marks the dbspace responsible for the disabling I/O error as down, completes a checkpoint, and releases blocked threads. Then onmode prompts you with the following message:

This will render any dbspaces which have incurred disabling I/O errors unusable 
and require them to be restored from an archive. 
Do you wish to continue?(y/n)

If onmode does not find any disabling I/O errors on noncritical dbspaces when you run the -O option, it notifies you with the following message:

There have been no disabling I/O errors on any noncritical dbspaces.