An event log is output at each stage in the life cycle of the Explicit memory block. The event log is output when an event leading to output occurs.

The following table describes the mapping of each stage in the life cycle and the timing of an event log output. An event leading to log output varies according to the set log output level.

Table 8-8 Mapping of each stage in the life cycle and output event log

Stage in life cycle	Timing of event log output	Log output level
Initialization of the Explicit memory block	Initialization of the Explicit memory block	verbose
	Initialization of the Explicit memory block (detailed information output)	debug
	Failure in initializing the Explicit memory block	verbose
Extension of the Explicit memory block	Change of sub-status of the Explicit memory block to Disable	verbose
Explicit release reserving of the Explicit memory block	Release reserving of the Explicit memory block by finalizer	verbose
Automatic release automatic reserving of the Explicit memory block		verbose
Automatic release explicit reserving of the Explicit memory block		verbose
Explicit releasing process of the Explicit memory blocks	Explicit releasing process of the Explicit memory block	normal
	Explicit releasing process of the Explicit memory block (detailed information output)	verbose
	Java heap overflow during explicit release processing of the Explicit memory block	normal
	Movement of object to the Java heap due to explicit release of the Explicit memory block	debug
Automatic releasing process of the Explicit memory block	Automatic releasing process of the Explicit memory block	normal
	Java heap overflow during automatic releasing process of the Explicit memory block	normal
Direct generation of objects in the Explicit memory block	Generation of objects in the Explicit memory block	verbose

Besides these, an event log is output when the garbage collection occurs, as an event that does not map to a stage in the life cycle.

For details on setting event log acquisition in the Explicit Memory Management functionality, see 3.3.19 Setting acquisition of JavaVM material in the uCosminexus Application Server Maintenance and Migration Guide. For details on the event log details of the Explicit Memory Management functionality, see 4.19 Event log in the Explicit Memory Management functionality in the uCosminexus Application Server Maintenance and Migration Guide.