Could not open performance trace file

More information on performance topics can be found in my new textbook on performance published Nov However please note, that it is right now only available in German. In the book you will find detailed descriptions of all relevant performance tools. An introduction to database processing, indexes, optimizers etc. Many database statements are discussed and different alternatives are compared. The resulting recommendations are supported by ABAP test programs which you can download from the publishers webpage see below.

The importance of the buffers in the SAP system are discussed in chaptr five. Of all ABAP statements mainly the usage of internal tables is important for a good performance. With all the presented knowledge you will able to analyse your programs and optimize them. Even more information — including the test programs — can be found on the webpage of the publisher. I would recommend you especially the examples for the different database statements.

The file with the test program K4a and necessary overview with the input numbers K4b can even be used, if you do not speak German! Thanks for this! Now why can't SAP provide this kind of context for it customers instead of making them figure out how the tools work?

Like 1 Share Right click and copy the link to share this comment Dushyant Shetty September 6, at pm I'm going to refer my students to your blog because of how informative it is while remaining concise.

Boes,I have two questions to ask you,they are:. How find the creation date of any database table? As it creation date is not maintained in attributes of table too,we can only see the "last changed date". I tried this by SQL trace,but no use May I know the significance of those values? Please send the reply to " raghavender. I was expecting each retrieval of records.

I'm trying to understand why my program is taking too long to run and need an understanding if the high cost is the DB or transfer from the DB to the app server. What is DB activity and watch is the app.

This is bit costly, and then stored in the cursor cache. It should not appear in your trace becasue you should trace executions which are not first time executions. In first executions other statements will run which are expensive, these are mainly buffer filling statements. These statements should not be in the trace, they will not usually appear in a second or third execution.

The column REC shows how many records are transfered per fetch. Package sizes are usually much higher, about And package size determines what you want to process in ABAP in your first step. The number of records per FETCH is not influenced by package size, it is limited by the block size of 32k divided by field length of a record, i.

Time is determined by the index, all other effects are usually less important. However, I thought it is better to provide a shorter introduction where really only the most important topics are discussed. Creation date of a table, what should this information be good for?

I don't know whether it is kept somewhere, I have my doubts. Pink colored duration times, only in extended list, these are just times above a limit. Not very helpful. You have to see how many records a selected in total by a statement and problems are indicated by the time needed to select one record, because a select fetching records can of course take longer than one getting only 1.

Please consider new option in filter "log statements with duration great than seconds" xyz. Best Regards, Kishore. It will capture RFCs if they run under the same user ID and during the period when the trace is active. There is another tool, the ST30 T not E which does what you want. Then it automatically activates the ST05 in all remote systems and collects the trace summaries into the guidance system. Our systems have the default values of 10 files at 16MB each but I've been asked how many trace file records this would allow before overwrite occurs.

The average size of a trace records is byte. Of there is some variance depending on the statement. Pictures helped. Didn't match my screen. Incorrect instructions. Too technical. Not enough information. Not enough pictures. Any additional feedback? You can also open WPA from the results page of assessments that are created by using the Assessment Platform. All available graphs for a recording are visible in the Graph Explorer window. Expand any node by clicking the small triangle.

Then, drag the graphs to the Analysis tab to view the full-size version of the graph and its associated data table. You can also double-click the graph to open it on the Analysis tab. By using the layout icons on the right of the graph title bar, you can select to view only the graph, only the data table, or both.

On the Analysis tab, you can select a time interval by dragging the pointer horizontally across a section of the graph. The timeline at the bottom of the tab applies to all graphs on the tab. After you have selected a time interval, you can zoom in to expand that time interval to the full width of the Analysis tab. To do this, right-click the interval, and then select Zoom to selected time range. You can repeat this step several times to see very fine detail of a very small time interval.

All graphs on the Analysis tab use the same timeline. Therefore, this action expands the same time interval for all those graphs. After you have selected a time interval, you can also highlight that time interval in all graphs on the Analysis tab and in the Graph Explorer window.

To do this, right-click the interval, and then select Highlight Selection. After 24 hours, Oracle Trace File Analyzer completes phase 2 for sales1 and sales3. Oracle Trace File Analyzer communication model is established for sales1 and sales3. You can perform normal Oracle Trace File Analyzer operations on sales1 and sales3.

Communication with sales2 and sales4 has not yet been established and so running remote commands to them fail. When running print status on sales1 and sales3 , we no longer see sales2 and sales4. Running the command tfactl diagcollect collects from sales1 and sales3 but not from the other nodes. While upgrading on the remaining nodes, Oracle Trace File Analyzer cannot see the nodes already upgraded until the configuration is synchronized.

The node list was changed to only the nodes that needed the keys synchronized, sales2 and sales4. Use the synchronize script to force Oracle Trace File Analyzer to generate and synchronize certificates. While running, the script prompts if you wish to generate SSL configuration files and then synchronizes them to the remote nodes.

After the key files are generated and synchronized, on each node you must find the files as follows:. Readable only by root , ownership:group of root. OSWatcher is then run as root until it is stopped and re-started as oracle or grid , or there is a reboot.

In either case, the parameters are persisted in a property file. OSWatcher defaults 30,48 are used unless other parameters are specified for interval and retention period. Beginning with Oracle Trace File Analyzer version Each time OSWatcher is started, the parameters for interval or retention hours are made persistent for that user.

In earlier versions, if the OSWatcher startup parameters are different than expected, then it is because OSWatcher was stopped and started as root with different parameters.

These settings would have persisted across reboots because there was only one properties file. In The OSWatcher startup parameters are different if OSWatcher is stopped and re-started as root with different parameters before a reboot. The parameters fetched from the root properties must not take effect after a reboot.

The parameters must revert to the parameters of oracle properties. The parameters are different and the persistent settings are changed because Oracle Support would have recommended different settings to investigate an issue. In that case, stop, and re-start OSWatcher with the normal parameters as a non-privileged user.