When the free space in the device where the DB is hosted is exhausted Sybase ASE gives following error:-

Msg 1105, Level 17, State 2
Server '', Procedure '', Line 15
Can't allocate space for object '' in database '' because 'default' segment is full/has no free extents. If you ran out of space in syslogs, dump the transaction log. Otherwise, use ALTER DATABASE to increase the size of the segment.
(return status = -7) 

In such cases sometimes we need to extend the Database device, for which first we’ll identify the devices mapped to the database by executing following command:-

sp_helpdb <DB Name>
go

Once the device is identified we would use following command to identify the free space in the device and the physical path of the device:-

sp_helpdevice <Device Name>
go

If the mount point has sufficient space, use following command to extend the device:-

disk resize name='<Device Name>', size='Amount of space you want to add'
go

Once space is added to the device we need to allocate that added space to the database by using following command:-

alter database <DB Name>
on <Data Device> = 'Amount of space you want to add' 
log on <Log Device> = 'Amount of space you want to add'
go