This function can be used to display the Adabas Fastpath buffer history information that has been recorded in the Adabas Fastpath configuration file either
automatically (see the Adabas Fastpath Log Parameter) or
by using the log function of Adabas Fastpath Special Services.
If history logs are present for more than one buffer, selecting option
code 3 from the main menu or entering the direct
command 3 from the command line
displays the following screen:
10:22:42 ***** A D A B A S FASTPATH SERVICES 8.2.2 ***** 2018-10-25
- Buffer History - F13000MA
Please mark to select Buffer for History Display
_ AFP17004 Global
_ A8P17004 Global
_ A8P17013 Global
Command ==>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Exit Top Menu
|
Mark the buffer for which history information is to be provided. The following Buffer History Available screen appears:
Note:
This is the first screen displayed if history logs exist for only one
buffer.
10:24:38 ***** A D A B A S FASTPATH SERVICES 8.2.2 ***** 2018-10-25
- Buffer History Available for Global A8P17004 - F13100MA
Buffer <---Logged at---> <-------------Optimization--------------->
Sel Session Date Time Attempts Optimized
__ 104 Oct 18,2018 13:37 Direct-access 105 90
Read-ahead
__ 104 Oct 18,2018 14:37 Direct-access 105 90
Read-ahead
__ 104 Oct 18,2018 15:14 E Direct-access 1039 593
Read-ahead 462 322
__ 105 Oct 18,2018 15:17 E Direct-access
Read-ahead 5 2
__ 106 Oct 18,2018 16:17 Direct-access
Read-ahead 6 2
__ 106 Oct 18,2018 17:17 Direct-access
Read-ahead 6 2
Select using S or an SS pair, Purge using P or a PP pair.
Position to: Oct 18,2018
Command ==>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Exit Reset Top Next Menu
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This screen displays a two-line summary for each log record of the selected (or default) buffer. The summary includes the following information:
| Column | Description |
|---|---|
| Sel |
The following option codes can be used to process one or more lines (records) of the log:
You must enter the options Use PF6 to clear all entries in the Select column. |
| Buffer Session | The buffer session number. Certain operations cannot be performed across sessions. |
| Logged at Date/Time | The date and time the log was recorded. |
| E M | E indicates end-of-job. M indicates a special log request using the function Special Services. |
| Direct Access | The number of attempted and successful direct access optimizations for each logging period. |
| Read-Ahead | The number of attempted and successful read-ahead optimizations for each logging period. |
Use PF8 to display the next page of log records.
If option code ss is marked for a pair of
records, the following History Interval screen appears. This screen displays
the statistics for the time interval specified in the screen heading.
16:24:40 ***** A D A B A S FASTPATH SERVICES 8.2.2 ***** 2018-03-07
History Interval - Jan 13,2018 14:34 to 15:06 F13110MA
Name: A8P17004 SVC: 254 DB: 17004
Dataspace: Buffer Status : Buffer Stopped
Started: Jan 13,2018 at: 12:34 Ave Memory Val: 1245
Address: 00001000 Size(k): 1023 Session Number: 2785
------------------------------ Buffer Statistics -----------------------------
Access Type Attempts (98%) <----------Successes (99%)
Read-ahead: 13 (0%) 7 (53%)
Direct: 54,816 (98%) 54,797 (99%)
RCs: 1 (0%) 1 (0%)
Others: 594 (2%)
Total: 55,424 (100%) 54,805 (98%)
------------------------------------------------------------------------------
Command ==>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Exit Excl Gen Buff Parm Menu
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The information contained on this screen is exactly like the General Information screen available directly from this screen by pressing PF7. The excluded command analysis, buffer memory and parameter screens can also be invoked by pressing PF6, PF8, and PF9, respectively. All of these screens are described in the section Buffer Information.
If, on the Buffer History screen, you marked a record with an
s instead of marking a pair, the following screen
will appear displaying the statistics at the time the history log was
recorded:
16:25:31 ***** A D A B A S FASTPATH SERVICES 8.2.2 ***** 2018-03-07
Buffer History - Logged Jan 13,2018 17:32 F13110MA
Name: A8P17004 SVC: 254 DB: 17004
Dataspace: Buffer Status : Active
Started: Jan 13,2018 at: 16:32 Ave Memory Val:
Address: 00001000 Size(k): 1023 Session Number: 2787
------------------------------ Buffer Statistics -----------------------------
Access Type Attempts (4%) <----------Successes (45%)
Read-ahead: 22 (2%) 12 (54%)
Direct: 20 (2%) 5 (25%)
RCs: 4 (0%) 4 (20%)
Others: 722 (96%)
Total: 768 (100%) 21 (2%)
------------------------------------------------------------------------------
Command ==>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Exit Next Excl Gen Buff Parm ZNext Menu
|
This screen displays the details for a single log record. PF keys can be used to display the next sequential log record until the end of session is found:
| PF Key | Displays... |
|---|---|
| PF5 Next | The statistics from the current log record. |
| PF10 Next | The difference between the current and previous log records. The effect of this function varies depending on the type of information being displayed. This key can be used to skip from one statistics time slice to the next showing the statistics achieved in that time slice (taking the difference between one time slice and the next rather than simply displaying the details of each time slice). |
Other PF keys provide direct access to the Excluded Command Analysis, General Information, Buffer Memory, and Parameter screens, which are described in the Buffer Information section.