db2 udb eee 7.2 fp 7 on aix 5.1

See 10 of these processes running per logical partition

db2lbm0 32
db2lbm0 32
db2lbm0 33
db2lbm0 33
db2lbm1 32
db2lbm1 32
db2lbm1 33
db2lbm1 33
db2lbm2 32
db2lbm2 32
db2lbm2 33
db2lbm2 33
db2lbm3 32
db2lbm3 32
db2lbm3 33
db2lbm3 33
db2lbm4 32
db2lbm4 32
db2lbm4 33
db2lbm4 33

From a Developer Domain article :
db2lbmX:

LOAD buffer manipulator. The last character 'X' indicates one or more. Writes loaded data to the database and can be involved in async I/O. There is always one and often more depending on a heuristic. The heuristic is based on the number of CPUs on the system and the number of containers being written to.

This "intelligent default" may be overridden by the DISK_PARALLELISM modifier to the LOAD command.

We should make it clear that this Async I/O is not the async file I/O supported by some operating systems; it just means that we have separate processes writing the I/O. This means that other processes that are formatting the data are not tied up on I/O waits.