IBM DB2 Manual page 260

db2.jcc.dumpPoolStatisticsOnScheduleFile
db2.jcc.jmxEnabled
db2.jcc.lobOutputSize
db2.jcc.maxTransportObjectIdleTime
db2.jcc.maxTransportObjects
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Application Programming Guide and Reference for Java
the file that is specified by db2.jcc.dumpPoolStatisticsOnScheduleFile. The
global transport object pool is used for the connection concentrator and
Sysplex workload balancing.
The default is -1. -1 means that global transport pool statistics are not written.
Specifies the name of the file to which global transport pool statistics are
written. The global transport pool is used for the connection concentrator and
Sysplex workload balancing.
If db2.jcc.dumpPoolStatisticsOnScheduleFile is not specified, global transport
pool statistics are not written.
Specifies whether the Java Management Extensions (JMX) is enabled for the
IBM Data Server Driver for JDBC and SQLJ instance. JMX must be enabled
before applications can use the remote trace controller.
Possible values are:
true or yes
Indicates that JMX is enabled.
Any other value
Indicates that JMX is disabled. This is the default.
Specifies the number of bytes of storage that the IBM Data Server Driver for
JDBC and SQLJ needs to allocate for output LOB values when the driver
cannot determine the size of those LOBs. This situation occurs for LOB stored
procedure output parameters. db2.jcc.lobOutputSize applies only to IBM Data
Server Driver for JDBC and SQLJ type 2 connectivity on DB2 for z/OS.
The default value for db2.jcc.lobOutputSize is 1048576. For systems with
storage limitations and smaller LOBs, set the db2.jcc.lobOutputSize value to a
lower number.
For example, if you know that the output LOB size is at most 64000, set
db2.jcc.lobOutputSize to 64000.
Specifies the amount of time in seconds that an unused transport object stays
in a global transport object pool before it can be deleted from the pool.
Transport objects are used for the connection concentrator and Sysplex
workload balancing.
The default value for db2.jcc.maxTransportObjectIdleTime is 60. Setting
db2.jcc.maxTransportObjectIdleTime to a value less than 0 causes unused
transport objects to be deleted from the pool immediately. Doing this is not
recommended because it can cause severe performance degradation.
Specifies the upper limit for the number of transport objects in a global
transport object pool for the connection concentrator and Sysplex workload
balancing. When the number of transport objects in the pool reaches the
db2.jcc.maxTransportObjects value, transport objects that have not been used
for longer than the db2.jcc.maxTransportObjectIdleTime value are deleted from
the pool.
The default value for db2.jcc.maxTransportObjects is -1. Any value that is less
than or equal to 0 means that there is no limit to the number of transport
objects in the global transport object pool.
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