Execute commands/statements in txt file supplied to plsql procedure

Question

Hi,
I need to execute commands which are in txt file , this txt filepath is supplied to the procedure.
In the procedure i want to open the txt file and read the commands and run the commands.
Please help on this .
Edited by: 904032 on Jun 26, 2012 12:02 AM

Answer 1

The fact that you are supplying a file path (more correctly known as a directory) is going to be your first problem. Security within Oracle means that access to files on the file server require a directory object to be specified and these directory objects refer to a specific directory on the file server. If you're going to be passing different directories into your procedure then you're going to have to have different directory objects set up for all the possible directories that can be accessed (or issue dynamic DDL to redefine a known directory object each time).
Once you've done that you can use the UTL_FILE package (http://docs.oracle.com/cd/E11882_01/appdev.112/e25788/u_file.htm#ARPLS70906) to read the contents of the file as lines.
Then it depends what you mean by "commands" and "statements". Are you referring to operating system commands?... If so you will need to use something like the DBMS_SCHEDULER package to issue a job to run immediately with the appropriate command, as that is able to issue operating system commands, or you are going to have to write some Java code to issue commands for you (plenty of examples if you google). OR, perhaps you are referring to SQL statements? These could possibly be issued using the PL/SQL execute immediate statement, but you will be leaving your database open to SQL injection and major security issues, something that most companies would consider a serious flaw and not want.
how to read string which is delimited by ';'. or how read each charater in a file ..About time you read the documentation (http://tahiti.oracle.com/). There are functions: SUBSTR and INSTR which can search for things in strings and extract parts of strings, or you can use the more advanced regular expression versions of those REGEXP_SUBSTR and REGEXP_INSTR, or even REGEXP_REPLACE (which is also good for extracting parts of strings).
If you want a more concise answer, you need to ask a more concise question... {message:id=9360002}