Collection Services data files: QAPMJVM

This file contains data for Java™ Virtual Machines (JVM) that are active within a process at the time the data was sampled. There is one record per interval for each process that has a JVM active.

Note: The only supported JVM is IBM® Technology for Java (J9).
Field Name Description Attribute
INTNUM Interval number: The nth sample database interval based on the start time specified in the Create Performance Data (CRTPFRDTA) command. PD (5,0)
DTETIM Interval date (yymmdd) for job interval entry and job completion date, and time (hhmmss) for job completion entry. C (12)
INTSEC Elapsed interval seconds. The number of seconds since the last sample interval. PD (7,0)
DTECEN Century digit. C (1)
JVNAME Job name/workstation name. C (10)
JVUSER Job user. C (10)
JVNBR Job number. C (6)
JVTDE System task identifier. The system task identifier associated with the initial thread of a job. This field can be used to join records to QAPMJOBMI field JBTDE. H (8)
JVTYPE Job type.
  • 0: IBM Technology for Java - 32 Bit
  • 1: IBM Technology for Java - 64 Bit
C (1)
JVVRSN JVM version (UTF-16 CCSID 1200). G (10)
JVPID Process identifier. B (9,0)
JVPOLICY Garbage collection policy (UTF-16 CCSID 1200). G (15)
JVHEAPC Current heap allocated. Current amount of heap storage allocated for this JVM in kilobytes. B (18,0)
JVHEAPU Heap in use. Amount of allocated heap actually being used in kilobytes. B (18,0)
JVMLCMEM Malloc memory size in kilobytes. B (18,0)
JVINTMEM Internal memory size in kilobytes. B (18,0)
JVJITMEM JIT memory size in kilobytes. B (18,0)
JVSCLMEM Shared class size in kilobytes. B (18,0)
JVGCCNBR Last garbage collection cycle number. B (9,0)
JVGCCTME Last garbage collection cycle time. Clock time spent performing garbage collection tasks during the last garbage collection cycle in milliseconds. B (18,0)
JVGCITME Interval garbage collection time. Clock time spent performing garbage collection tasks during this collection interval in milliseconds. B (18,0)
JVGCTTME Total garbage collection time. The total amount of clock time spent performing garbage collection by all tasks since the JVM started. B (18,0)