When you run the awrrpt.sql script, you ll need to make the following choices: Choose between an HTML or plain text report Specify the beginning and ending snap IDs If you prefer, you can use the awrsqrpt.sql SQL script, located in the $ORACLE_HOME/rdbms/ admin directory, to generate a report focusing on the performance of a single SQL statement over a range of snapshot IDs. This may be the right script to run if you re trying to analyze the performance of a specific SQL statement, instead of the entire database.

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he scripts we are about to analyze are for an X-based application that gives you a way of easily accessing systems based on their system names or IP addresses. When managing environments with a machine count in the hundreds or more, saving every bit of time is vital. The navigation window has grown and matured over many years and now we have a cleaned-up version that s running on both Linux- and Solaris-based X displays as well as on X servers that run on Windows-based systems. The navigation window also provides a simple method for users to access these systems. Having users set up their own environment is sometimes problematic because of varying skill levels. Providing a utility that is easy to use and is owned and used by the administrators can help eliminate some issues. When using the navigation window, you see a small xterm window on your desktop, with a Node: prompt. The usage is simple enough: just type in the node name or IP address of a remote machine, and an xterm window will connect you to that system. Depending on your method of connecting to the remote machine, you may still need to provide a password. Other logic in the script makes the user interface and connection type (ssh, telnet, etc.) configurable. Note that this chapter does not provide an explanation of X or display values. The preceding chapter provided an overview of X-display usage.

You can also use the functions AWR_REPORT_TEXT and AWR_REPORT_HTML (both belonging to the DBMS_WORKLOAD_REPOSITORY package) to get AWR reports in text and HTML format respectively. However, Oracle recommends that you use the awrrpt.sql script (which uses the preceding two functions), to get your reports, instead of directly using these functions.

The AWR reports include voluminous information, including the following: Load profile Top five timed events Wait events and latch activity Time-model statistics Operating system statistics SQL ordered by elapsed time Tablespace and file I/O statistics Buffer pool and PGA statistics and advisories Here s how you create a typical AWR report. First, run the awrrpt.sql script as shown here:

SQL> @$ORACLE_HOME/rdbms/admin/awrrptsql Current Instance ~~~~~~~~~~~~~~~~ DB Id DB Name Inst Num Instance ----------- -------- -------- -----------877170029 ORCL 1 orcl In the next step, specify the report type, as shown in Listing 18-2 Listing 18-2 Specifying the Report Type for an AWR Report Specify the Report Type ~~~~~~~~~~~~~~~~~~~~~~~ Would you like an HTML report, or a plain text report Enter 'html' for an HTML report, or 'text' for plain text Defaults to 'html' Enter value for report_type: text Type Specified: text Instances in this Workload Repository schema ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ DB Id Inst Num DB Name Instance Host ------------ -------- ------------ ------------ -----------* 877170029 1 ORCL orcl prod5 Using 877170029 for database Id Using 1 for instance number Next, you must specify the range you want the AWR report to cover by specifying the beginning and ending snapshots for the time period you chose, as in Listing 18-3 Listing 18-3.

<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <probing privatePath="lib;bin" /> </assemblyBinding> </runtime> </configuration> When a weakly named assembly is found, the assembly loader checks if the simple name, the Culture, and the PublicKeyToken of the found assembly match the name of the requested assembly. If this is the case, the assembly will be loaded. As mentioned previously, the version number of a weakly named assembly is not relevant for assembly loading. Even if the version number of the found DLL is lower than the requested version number, the assembly will be loaded and used. For assemblies with a strong name, the version number is not silently ignored: you must ensure that the right version of every dependent strongly named assembly can be found. However, for strongly named assemblies, there are further deployment options.

Specifying the Report Range for an AWR Report Specify the number of days of snapshots to choose from ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Entering the number of days (n) will result in the most recent (n) days of snapshots being listed Pressing <return> without specifying a number lists all completed snapshots.

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