Drop a storage space
Use onspaces to drop a dbspace, temporary dbspace, blobspace, sbspace, temporary sbspace, or extspace.
On UNIX, you must be logged in as root or informix to drop a storage space. On Windows, you must be a member of the Informix-Admin group to drop a storage space.
You can drop a storage space only when the database server is in online, administration, or quiescent mode.