Simple .NET/ASP.NET PDF document editor web control SDK

where <option> ::= -H | -V | [ [-C <v>] [-L] [-M <o>] [-R <n>] [-S] ] <logon> ::= <username>[/<password>][@<connect_identifier>] | / | /NOLOG <start> ::= @<URL>|<filename>[.<ext>] [<parameter> ...] "-H" displays the SQL*Plus version banner and usage syntax "-V" displays the SQL*Plus version banner "-C" sets SQL*Plus compatibility version <v> "-L" attempts log on just once "-M <o>" uses HTML markup options <o> "-R <n>" uses restricted mode <n> "-S" uses silent mode [pasprod] $

In Oracle Database 10g, the login.sql file is executed at SQL*Plus startup time as well as when you use the

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Here are brief explanations of the most important command-line options you can use when you start a SQL*Plus session: The silent option (-S): If you invoke SQL*Plus with the -s option, the session will run silently; there won t be any output on the screen. When you re running batch jobs and you have no need to see the output of the SQL*Plus session, you can start the session in silent mode. The silent mode is very useful when you re producing reports, because the banner, version, and other information is suppressed. The no-prompt logon option (-L): If you invoke SQL*Plus with the -L option, it won t prompt you for a new username and password if you fail to log in the first time. Again, this is an option that s handy during the execution of SQL batch jobs through the operating system. The restrict option (-R): You ve already seen how you can use the SQL*Plus -R option (at three different levels) to disable certain operating system commands in SQL*Plus. Refer to the Using the RESTRICT Command to Disable Commands section, earlier in this chapter, for more information. The markup option (-M): You can generate complete web pages from your SQL*Plus sessions by invoking SQL*Plus with the -M option. There is more on the markup command in the Creating Web Pages Using SQL*Plus section of this chapter.

The CLEAR command removes several current settings, including settings for columns and the SQL*Plus buffer. You use the CLEAR command to make sure that settings no longer needed are not in force in the current session of SQL*Plus. Listing 12-7 shows sample output of the CLEAR command. Listing 12-7. Using the CLEAR Command SQL> CLEAR BREAKS breaks cleared SQL> CLEAR BUFFER buffer cleared SQL> CLEAR COLUMNS columns cleared

As you can see in both tables, calls across managed-unmanaged boundaries produced by C++/CLI can be more than 500 percent slower than calls without transitions. However, unless you have a large number of transitions, this overhead can likely be ignored. The difference in overhead between the 10 million calls to fManagedLocal from native callers (~2.12s) and the 10 million calls from managed callers (~0.32s) is about 1.8 seconds. In addition to the measured time, both tables also show the transitions that occur in the different scenarios. For example, for the direct call to fManagedLocal from managed code, the text M M shows that a call from managed code to managed code has occurred. Cells with the text U M indicate an unmanaged-to-managed transition. Likewise, M U stands for a managed-to-unmanaged transition. For the indirect call to fManagedLocal from managed code, the text M U M indicates a transition from managed code to unmanaged code and back to managed code. This is the double-thunking scenario discussed earlier. In addition to the double-thunking case, Table 92 also shows the cost for an indirect method call with a __clrcall function pointer, which can prevent double thunking, as discussed earlier. As you can see, double thunking can easily increase the costs for method calls by more than 600 percent. Table 9-3 shows similar results for the double-thunking problem related to virtual function calls.

if eval [ \"'$children'$id\" = "\"\"" ] then return else for child in `eval echo '$children'$id` do eval parent='$ppid'$child if [ "$child" = "`eval echo '$children'$parent | awk '{print $NF}'`"] then

SQL> CLEAR SQL sql cleared SQL> CLEAR TIMING SQL> CLEAR SCREEN The CLEAR command by itself clears your screen without affecting any of the settings of SQL*Plus. The CLEAR BUFFER and CLEAR SQL commands achieve the same effect: they remove the SQL in the memory buffer of SQL*Plus. The CLEAR COLUMNS and the CLEAR BREAKS commands remove any column definitions and breaks. The CLEAR TIMING command deactivates all timers. You use the CLEAR SCR (or CLEAR SCREEN) command to clear the screen.