List of Memory Snapshots  

Use

You use the list of memory snapshots to view the snapshots that are currently saved on the application server and open them for display. Use the application toolbar to perform various operations such as saving to and loading from a local file on the front-end computer, or deleting memory snapshots.

Features

You can hide and display the list of memory snapshots by choosing  Memory Snapshots.

Memory Snapshot Creation

You create a memory snapshot in one of the following ways:

●      In any transaction, choose System  → Utilities → Memory Analysis → Create Memory Snapshot.

●      In any transaction, enter /hmusa in the command field.

●      In the ABAP Debugger, choose Development → Memory Analysis → Create Memory Snapshot.

●      In the system class CL_ABAP_MEMORY_UTILITIES, call the static method WRITE_MEMORY_CONSUMPTION_FILE.

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All options follow the same naming conventions for the files in which the memory snapshots are stored. The file names are abDbgMemory_<number of the current work process>_<number within the current work process>. The file names are unique within one work process. After a work process restarts, the system also restarts the numbering of the files and existing files can be overwritten. Therefore, if you want to retain a memory snapshot for a longer period, you must save it locally on the presentation server.

Functions

To perform various operation on the list of memory snapshots, you use the functions from the application toolbar:

●      To open the selected memory snapshot in the individual display, choose  with the quick info text Open Memory Snapshot.

The system opens the first snapshot under t_0. The system opens the next snapshot as t_1, if the snapshot is older than the one that is currently opened. The system opens it as t_0, while the currently opened one becomes t_1.

If you have already opened two memory snapshots as t_0 and t_1 and you attempt to open another snapshot, the system performs one of the following:

○       If the snapshot is newer then the one already opened as t_1, t_1 becomes t_0 and the newer snapshot becomes t_1.

○       If the snapshot is older then the one already opened as t_0, t_0 becomes t_1 and the older snapshot becomes t_0.

○       If the snapshot is newer than t_0, but older than t_1, the system keeps the one that was opened last.

The system colors the memory snapshot that is opened as t_0 in blue. The snapshot that is opened as t_1 is colored in red. The unopened snapshots are colored in black.

●      To refresh the list of memory snapshots, choose  with the quick info text Refresh.

●      To save the selected memory snapshot in a file on the presentation server, choose  with the quick info text Save as Local File.

●      To copy a memory snapshot from a file on the presentation server to the application server, choose  with the quick info text Load Local File.

●      To delete a memory snapshot from the application server,  choose  with the quick info text Delete File.

Snapshots that you have currently opened as t_0 or t_1 are protected from being deleted. They cannot be protected from being overwritten by a new snapshot in case the numbering for the corresponding work process has restarted.

●      To find a memory snapshot in the list of memory snapshots, choose  with the quick info text Find.