ASP.NET Web PDF Document Viewer/Editor Control Library

You use the GET_FILE procedure to copy binary files from a remote server to the local server. First, log into the remote server and create the source directory object, as shown here: SQL> CONNECT system/system_passwd@remote_db Connected. SQL> CREATE OR REPLACE DIRECTORY source_dir as '/u01/app/oracle/source'; Next, you log into the local server and create a destination directory object, as shown here: SQL> CONNECT system/system_passwd@local_db Connected. SQL> CREATE OR REPLACE DIRECTORY dest_dir as /'u01/app/oracle/dest'; Once you create the source and destination directories, ensure that you have a database link between the two databases, or create one if one doesn t exist: SQL> CREATE DATABASE LINK remote_db CONNECT TO system IDENTIFIED BY system_passwd USING 'remote_db'; SQL> Now you execute the GET_FILE procedure to transfer the file from the remote server to the local server, as shown here: SQL> BEGIN DBMS_FILE_TRANSFER.GET_FILE( source_directory_object source_file_name source_database destination_directory_object destination_file_name END; / SQL>

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'SOURCE_DIR', 'test01.dbf', 'remote_db', 'DEST_DIR', 'test01.dbf');

When you extend an existing project with managed code, I recommend minimizing the changes to your existing code. Object file compatibility allows you to keep the native compilation model for all source files that do not benefit from one of the managed compilation models. Since object file compatibility is not supported by /clr:pure, /clr is the compilation model of choice for extending projects with managed code. Compiling only those files to managed code that benefit from managed execution can very effectively minimize overhead of managed execution. This overhead has various forms, including additional metadata for every native function that is called from managed code, for every managed function that is called from native code ( 9 will cover details about metadata for function calls across managed-unmanaged boundaries), and for every type that is used in managed code (metadata for native types is discussed in 8). All this additional metadata increases the size of the generated assembly, the amount of memory needed to load the assembly, and the assembly s load time. Furthermore, managed code is less compact than IA32 assembly code especially when managed types are used in native code. This can again increase the assembly size and load time. Managed code needs to be JIT-compiled before it can be executed. Making the wrong choice for the compilation models of your files adds a lot of hidden overhead to your solution. Compiling only those files to managed code that use managed types, however, can be a powerful optimization option.

Note that for the SOURCE_DATABASE attribute, you provide the name of the database link to the remote database.

You use the PUT_FILE procedure to transfer a binary file from the local server to a remote server. As in the case of the previous two procedures, you must first create the source and destination directory objects, as shown here (in addition, you must ensure the existence of a database link from the local to the remote database):

if test $curr_cpu_time -gt $value -a \ $curr_cpu_time -lt $errval then notify "Warning" $killoption $process $pid \ $curr_cpu_time $value "minutes of CPU time"

SQL> CONNECT system/system_passwd@remote_db Connected. SQL> CREATE OR REPLACE DIRECTORY source_dir as '/u01/app/oracle/source'; SQL> connect system/system_passwd@local_db Connected. SQL> CREATE OR REPLACE DIRECTORY dest_dir as /'u01/app/oracle/dest'; You can now use the PUT_FILE procedure to put a local file on the remote server, as shown here: SQL> BEGIN DBMS_FILE_TRANSFER.PUT_FILE( source_directory_object source_file_name destination_directory_object destination_file_name destination_database END; / SQL>

'SOURCE_DIR', 'test01.dbf', 'DEST_DIR', 'test01.dbf', 'remote_db');

The DBMS_MONITOR package helps you trace and gather statistics about client sessions. This package is at the heart of the new end-to-end tracing feature of Oracle Database 10g. The package has routines for enabling and disabling statistics aggregation and for tracing by session ID, or a combination of service name, module name, and action name. 23 contains a detailed discussion of this package. Here are the important procedures of the package: CLIENT_ID_STAT_ENABLE enables statistics accumulation for a client identifier. CLIENT_ID_STAT_DISABLE disables statistics accumulation for a client identifier. SERV_MOD_ACT_STAT_ENABLE enables the aggregation of statistics for a hierarchy of service name, module name, and action name. SERV_MOD_ACT_STAT_DISABLE disables the aggregation of statistics for a hierarchy of service name, module name, and action name.

The UTL_COMPRESS package lets you compress and decompress binary data (RAW, BLOB, and BFILE). It provides the same functionality as the gzip utility. Here s a simple example: SQL> SET SERVEROUTPUT ON SQL> DECLARE l_original_blob BLOB; l_compressed_blob BLOB; l_uncompressed_blob BLOB; BEGIN l_original_blob := TO_BLOB(UTL_RAW.CAST_TO_RAW('1234567890123456789012 345678901234567890')); l_compressed_blob := TO_BLOB('1');