The MESSAGES command finds, analyzes, and prints the DATA COMM messages in the system. These messages are useful for determining
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If any stations or MCSs have loaded the system with messages
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The amount of DATA COMM traffic to various stations
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If an MCS is recalling messages correctly
Note that this command is valid only for COMPLETE or ALLINUSE memory dumps; it is rejected for PARTIAL memory dumps.
Because of the way DUMPANALYZER accesses memory, a message analysis sometimes takes quite a while, especially if many messages exist or the ASD table sizes are large. To check on the status of the command, enter the ?AX WHERE command. To abort the MESSAGES command, you can enter the ?AX BRK command.
DUMPANALYZER then displays information regarding the searching process.
Syntax
── MESSAGES ─┬───────────────────────────┬─────────────────────────────┤
├─ EXPAND ──────────────────┤
├─ ALL ─────────────────────┤
└─ LSN ── <decimal number> ─┘Explanation
The following text describes the meaning of each construct. Refer to “Basic Constructs” earlier in this section for details about the <decimal number> construct.
MESSAGES
Finds and counts all data comm messages. For each station, it displays the number of queued messages and the name of the controlling MCS. If the MCP data comm tables were not in memory when the dump was created, some of this information might be missing.
MESSAGES EXPAND
Along with the summary previously described, prints all data comm messages with the header decoded and the message text displayed in alphanumeric characters.
MESSAGES ALL
Prints all message areas. Data comm messages are printed as previously described, and other message areas are printed in hexadecimal and alphanumeric characters. Use this report for detailed analysis of memory area usage.
MESSAGES LSN <decimal number>
Prints the messages queued for the specified station.
Example
The following example shows the output from the MESSAGES command.
INPUT: MESSAGES S U M M A R Y O F M E S S A G E A R E A S 756 TOTAL AREAS (4736 WORDS) 745 NON-DATACOMM AREAS (4472 WORDS) 11 DATACOMM MESSAGES (264 WORDS) 1 MESSAGES FOR UNKNOWN LSN'S. (13 WORDS) 1 MESSAGES FOR LSN 3 (8 WORDS) MCS = 1 SYSTEM/COMS ON 39 3 MESSAGES FOR LSN 155 (201 WORDS) MCS = 1 SYSTEM/COMS ON 39 2 MESSAGES FOR LSN 169 (14 WORDS) MCS = 0 2 MESSAGES FOR LSN 171 (14 WORDS) MCS = 0 1 MESSAGES FOR LSN 172 (7 WORDS) MCS = 0 1 MESSAGES FOR LSN 173 (7 WORDS) MCS = 0
