CICSTG Gateway Daemon Memory attribute group

The CICSTG Gateway Daemon Memory attribute group reports statistics on the Gateway Daemon's memory usage. This helps you generate alerts before Out-Of-Memory (OOM) exceptions occur. It also helps with trending and capacity planning.

ASID The address space identifier of the region being monitored, in hexadecimal format. Four hexadecimal digits.

Free Heap after GC The amount of available JVM heap after Garbage Collection (GC).

Free Memory 31 Amount of available 31-bit memory.

Free Memory 64 The size of unallocated or free 64-bit virtual memory.

Gateway Daemon Name Indicates the job name of the CICS TG daemon being monitored. An alphanumeric string, maximum eight characters.

GC Count JVM Garbage Collection (GC) count since daemon started.

GC Time JVM Garbage Collection (GC) time in milliseconds since daemon started.

Initial Heap Size JVM initial heap size. The value format is a positive integer, maximum eight bytes.

Maximum Heap Size JVM maximum heap size. The value format is a positive integer, maximum eight bytes.

MEMLIMIT The total size of usable above the bar (64-bit) virtual memory in the address space.

Memory Limit The limit of 31-bit user memory. The value format is a positive integer, maximum eight bytes.

Origin Node The combination of the CICS TG jobname, the z/OS System ID (SMFID), and the CICSTG string. An alphanumeric string, maximum 32 bytes and case-sensitive.

When a situation is true, the system compares the origin node name in the attribute to the names of managed systems assigned to the situation. If the origin node name matches the name of a managed system, the node's status changes accordingly. If the names of the origin node and the managed systems do not match, the status remains unchanged.

Percent of Used Heap The percentage of JVM Heap that was in use after Garbage Collection (GC).

Percent of Used Memory 31 The percentage of allocated 31-bit user memory.

Percent of Used Memory 64 The percentage of 64-bit virtual memory currently allocated in the address space.

Percent of Free Memory 31 The percentage of unallocated or free 31-bit virtual memory.

Percent of Free Memory 64 The percentage of unallocated or free 64-bit virtual memory.

Percent of Free Heap The percentage of available JVM heap after Garbage Collection (GC).

Region Size Amount of available 31-bit memory which is less than or equal the region size specified in JCL.

System ID The four character name that identifies the z/OS System ID (SMFID) that is hosting this CICS TG daemon. An alphanumeric string, maximum four characters. z/OS System IDs are always in uppercase characters.

Used Heap after GC JVM heap size after Garbage Collection (GC). The value format is a positive integer, maximum eight bytes.

Used Memory 31 Amount of allocated or used 31-bit memory. The value format is a positive integer, maximum eight bytes.

Used Memory 64 The size of currently allocated 64-bit virtual memory.