How to call OS commands by java stored procedures
Editor to share with you how java stored procedures call OS commands, I believe most people do not know much, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!
1. Take a look at this catalog first.
[oracle@ocean ~] $pwd
/ home/oracle
[oracle@ocean ~] $ls-l
Total 8
-rw-r--r-- 1 oracle orains 604 Dec 26 2006 bash
two。 Connect to test user
SQL > conn test/test
Connected.
3. Permissions granted to test users to read and write files and execute commands
SQL > exec dbms_java.grant_permission ('TEST','SYS:java.io.FilePermission','','read,write,execute,delete')
PL/SQL procedure successfully completed.
SQL > exec dbms_java.grant_permission ('TEST','java.lang.RuntimePermission','*','writeFileDescriptor')
PL/SQL procedure successfully completed.
4. Set up the java stored procedure. Note that the path of the exp and the path of the dmp file here are the path of the database server.
Create or replace and compile java source named "aa"
As
Import java.io.*
Import java.lang.*
Import java.util.*
Import java.sql.*
Import oracle.sql.*
Public class aa
{
Public static void invoke_exe () throws IOException
{
Process p=Runtime.getRuntime () .exec ("/ oracle/product/9.2.4/bin/exp userid=test/test file=/home/oracle/test.dmp")
Try
{
P.waitFor ()
} catch (InterruptedException ie) {System.out.println (ie);}
}
}
/
Java created.
Elapsed: 00:00:00.01
5. Establish a stored procedure call_aa that calls the java stored procedure
Create or replace procedure call_aa
As language java
Name 'aa.invoke_exe ()'
/
6. Execute java stored procedures
Exec call_aa
7. Check to see if the dmp file has been generated
[oracle@ocean ~] $pwd
/ home/oracle
[oracle@ocean ~] $ls-l
Total 28
-rw-r--r-- 1 oracle orains 604 Dec 26 2006 bash
-rw-r--r-- 1 oracle orains 16384 Jul 3 14:12 test.dmp
-
Exec dbms_Java.Grant_Permission ('TEST',' java.io.FilePermission',', 'read, write, execute, delete')
Exec dbms_Java.Grant_Permission ('TEST',' java.io.FilePermission','d java.io.FilePermission', aa.battering, 'read, write, execute, delete')
Exec dbms_java.grant_permission ('TEST','java.lang.RuntimePermission','*','writeFileDescriptor')
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