Getting Started with DB2 Express-C

110 Getting Started with DB2 Express-C
Figure 6.1 – The DB2 Process Model
Process Name
db2sysc (Linux)
db2syscs (Win)
db2acd
db2wdog
db2vend
db2fmp
Description
The main DB2 system controller or engine. Starting in DB2 9.5, there is
only one multi-threaded main engine process for the entire partition. All
Engine Dispatchable Units (EDUs) are threads inside this process.
Without this process, the database server cannot function.
The autonomic computing daemon. It is used to perform client side
automatic tasks, such as health monitor, automatic maintenance
utilities, and the admin scheduler. This process was formerly called
db2hmon.
The DB2 watchdog. The watchdog is the parent of the main engine
process, db2sysc. It cleans up resources if the db2sysc process
abnormally terminates.
The fenced vendor process introduced in DB2 9.5 All 3 rd party vendor
code runs in this process outside of the engine. 3 rd party vendor
applications are non-IBM programs that can interact with DB2; for
example, log archiving can be managed by a 3 rd party vendor code by
specifying a user exit routine parameter to point to this code.
Fenced processes that run user code on the server outside the firewall
for both stored procedures and user defined functions. This process
replaces both the db2udf and db2dari processes that were used in