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Listing 24-19. Using the UTL_FILE Package to Perform Text Input and Output SQL> DECLARE v_failed dba_profiles.limit%TYPE; v_lock dba_profiles.limit%TYPE; v_reuse dba_profiles.limit%TYPE; /* the fHandle declared here is used every time the OS file is opened /* fHandle UTL_FILE.FILE_TYPE; vText VARCHAR2(10); v_username dba_users.username%TYPE; CURSOR users IS SELECT username FROM dba_users; BEGIN /* Open utlfile.txt file for writing, and get its file handle */ fHandle := UTL_FILE.FOPEN('/a01/pas/pasp/import','utlfile.txt','w'); /* Write a line of text to the file utlfile.txt */ UTL_FILE.PUT_LINE(fHandle,'USERNAME'||'ATTEMPTS'||'LIFE'||'LOCK'||); /* Close the utlfile.txt file */ UTL_FILE.FCLOSE(fHandle); /* Open the utlfile.txt file for writing, and get its file handle */ fHandle := UTL_FILE.FOPEN('/a01/pas/pasp/import','utlfile.txt','a'); OPEN users; LOOP FETCH users INTO v_username; EXIT when users%NOTFOUND; SELECT p.limit INTO v_failed FROM dba_profiles p, dba_users u WHERE p.resource_name='FAILED_LOGIN_ATTEMPTS' AND p.profile=u.profile AND u.username=v_username; SELECT p.limit INTO v_life FROM dba_profiles p, dba_users u WHERE p.resource_name='PASSWORD_LIFE_TIME' AND p.profile=u.profile AND u.username=v_username; SELECT p.limit INTO v_lock FROM dba_profiles p, dba_users u WHERE p.resource_name='PASSWORD_LOCK_TIME' AND p.profile=u.profile AND u.username=v_username; vtext :='TEST'; /* Write a line of text to the file utlfile.txt */ UTL_FILE.PUT_LINE(fHandle,v_username||v_failed||_life||v_lock); /* Read a line from the file utltext.txt */ UTL_FILE.GET_LINE(fHandle,v_username||v_failed||v_life||v_lock); /* Write a line of text to the screen */ UTL_FILE.PUT_LINE(v_username||_failed||v_life||v_lock); END LOOP; CLOSE users; /* Close the utlfile.txt file */ UTL_FILE.FCLOSE(fHandle); /* this is the exception block for the UTL_File errors */ EXCEPTION

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First we define the directories to be monitored. It would be a bit cleaner to place this definition in a separate file so you don t have to modify the script to make configuration changes. However, to keep the script as simple as possible I have not done that. Each entry in the FILENUM variable is a colon-delimited set of fields. The fields specify the directory name to monitor, the warning threshold, the maximum limit, and finally the e-mail address to which to send notifications.

WHEN UTL_FILE.INVALID_PATH THEN RAISE_APPLICATION_ERROR(-20100,'Invalid Path'); WHEN UTL_FILE.INVALID_MODE THEN RAISE_APPLICATION_ERROR(-20101,'Invalid Mode'); WHEN UTL_FILE.INVALID_OPERATION then RAISE_APPLICATION_ERROR(-20102,'Invalid Operation'); WHEN UTL_FILE.INVALID_FILEHANDLE then RAISE_APPLICATION_ERROR(-20103,'Invalid Filehandle'); WHEN UTL_FILE.WRITE_ERROR then RAISE_APPLICATION_ERROR(-20104,'Write Error'); WHEN UTL_FILE.READ_ERROR then RAISE_APPLICATION_ERROR(-20105,'Read Error'); WHEN UTL_FILE.INTERNAL_ERROR then RAISE_APPLICATION_ERROR(-20106,'Internal Error'); WHEN OTHERS THEN UTL_FILE.FCLOSE(fHandle); END;

The UTL_SMTP package is useful for sending e-mail messages from a PL/SQL program. This package has too many low-level primitives, and it s therefore too cumbersome to be thought of as an interactive e-mail client. You may want to alert people when specific events take place in the database. You can send e-mail, pages, and even text messages over a cell phone using the UTL_SMTP package. Your e-mail can also have attachments.

The UTL_SMTP package is named after the Simple Mail Transfer Protocol (SMTP), which can send or receive e-mail using TCP/IP. The UTL_TCP package can send data through the TCP/IP protocol, and the UTL_SMTP package uses this functionality of the UTL_TCP package to send e-mails from the database.

The UTL_SMTP package performs the following steps to send messages from the database: 1. Establish the connection to the SMTP server using the OPEN_CONNECTION function and the HELO procedure. 2. Initiate a mail transaction using the MAIL function. 3. Specify the recipients of the e-mail message using the RCPT function. 4. Provide the e-mail message using the DATA function. 5. Terminate the SMTP connection and disconnect using the QUIT function. Here s a simple example showing how to send mail from PL/SQL: DECLARE v_connection UTL_SMTP.CONNECTION; BEGIN v_connection := UTL_SMTP.OPEN_CONNECTION(smtp.server.xyz.com); UTL_SMTP.HELO(v_connection,xyz.com);

Managed libraries can define CAS permission classes Instances of permission classes can describe security-relevant operations that can be performed with the managed library For example, accessing the file system is a security-relevant operation For the FCL class FileStream, there is also a FileIOPermission class CAS permissions can be very specific An instance of the FileIOPermission can, for example, describe read access to a subdirectory named info in your application s base directory..

#!/bin/sh FILENUM="/var/spool/mqueue:50:100:root \ /var/spool/lp:50:100:root@yourdomain.net /:50:100:rbpeters"

UTL_SMTP.MAIL(v_connection,program@xyz.com); UTL_SMTP.RCPT(v_connection,oracle_dba@xyz.com); UTL_SMTP.DATA(v_connection,Just a SMTP Test Message); UTL_SMTP.QUIT(v_connection); END;