we are running sles on an IBM mainframe under z/vm.
While adding space I got a little finger tired and made 2 mistakes while doing the mknod command.
I should have keyed:
mknod -m 660 /dev/dasdbd3 b 94 223
I keyed:
mknod -m 660 /dev/dasddb3 b 94 223

and later
I keyed:
mknod -m 660 /dev/dasddb3 b 94 223
when I should have keyed:
mknod -m 660 /dev/dasdde3 b 94 227

So I now have 2 223s and 227s.
These are related to a DB2 database so I'm unsure if I can just remove the 2 wrong devices w/o taking the DB down or what needs done.
Also, would there be any affect on writing to the database?
when I discovered the error I tried to erase it(rm) but was told there was noting to erase.

Thank you in advance

According to the man page for mknod:

"If pathname already exists, or is a symbolic link, this call fails with an EEXIST error."

Adding or removing a node should not touch the device.

So I should be able to do an rm on the non-existent devices and be ok?
I should also point out there is no base "dasdbd"

Thank you
mace

A direct-access storage device (DASD) pronounced /ˈdæzdiː/) is a secondary storage device in which "each physical record has a discrete location and a unique address."[1] IBM coined the term DASD as a shorthand describing disks, magnetic drums, and data cells. Later, optical disc drives are also classified as DASD.[2] The term DASD contrasts with sequential storage media such as magnetic tape, and unit record equipment such as card devices like card readers and punches.

Access methods for DASD include sequential, indexed, and direct. Direct access contrasts with the sequential access method used in tape drives. A record on a DASD can be accessed without having to read through intervening records from the current location, whereas reading anything other than the "next" record on tape requires skipping over intervening records, and requires a proportionally long time to access a distant point in a medium.

I'm a little lost. How does this help answer my question??

Indeed.
Go subscribe to linux-390 on marist and ask there. It started life as a VM list, but is largely zLinux these days. Whilst this is a generic question, not many here run on z.