Oracle dynamic call external C library functions

Oracle dynamic call external C library functions

 Category: Oracle

2016-08-20 05:24:52

Original Address: the Oracle dynamic call external C library functions  Author: libydwei2007

 

As the project in order to shorten development time, to have developed a good call an external C program in Oracle.
Find some posts online, combined with the actual summary of this article. I hope to be helpful.
Reference article: http: //www.cnblogs.com/mathitlin99/archive/2013/09/05/3303717.html

first compile the external dynamic library <span "=" "> libDialPlan.so

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1. gcc -fPIC -c LibDialPlan.cpp
2. gcc -shared -o libDialPlan.so LibDialPlan.o -lstdc++

Modify files and Oracle TNS Listener files.
I do not know the direct copy is available. If you have questions, please pay attention to both sides of the equal sign and parentheses space .
tnsnames.ora

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1. ORADB =
2.   (DESCRIPTION =
3.     (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.69.166)(PORT = 1521))
4.     (CONNECT_DATA =
5.       (SERVER = DEDICATED)
6.       (SERVICE_NAME = oradb)
7.     ) 
8.   )
10. EXTPROC_CONNECTION_DATA=
11.   (DESCRIPTION=
12.     (ADDRESS_LIST=
13.     (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
14.   )
15.   (CONNECT_DATA=
16.     (SID = PLSExtProc)
17.     (PRESENTATION = RO)
18.   )
19.   )

listener.ora

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1. LISTENER =
2.   (DESCRIPTION_LIST =
3.     (DESCRIPTION =
4.       (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
5.       (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.69.166)(PORT = 1521))
6.     )
7.   )
9. ADR_BASE_LISTENER = /home/oracle/db/app
12. SID_LIST_LISTENER =
13. (SID_LIST =
14.   (SID_DESC =
15.   (GLOBAL_DBNAME = oradb)
16.   (SID_NAME = oradb)
17.   )
18.   (SID_DESC=
19.   (SID_NAME = PLSExtProc)
20.   (ORACLE_HOME = /opt/local/oracle/app/product/11.2.0/dbhome_2)
21.   (ENVS = EXTPROC_DLLS=ANY)
22.   (PROGRAM = extproc)
23.   ) 
24. )

After the modification restart the listener: lsnrctl stop; lsnrctl start
viewing monitor status, should appear the following monitor items: PLSExtProc <span "=" "> 

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1. [root@localhost admin]# lsnrctl status
3. LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 04-AUG-2016 19:33:50
5. Copyright (c) 1991, 2009, Oracle. All rights reserved.
7. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
8. STATUS of the LISTENER
9. ------------------------
10. Alias LISTENER
11. Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
12. Start Date 04-AUG-2016 16:23:54
13. Uptime 0 days 3 hr. 9 min. 55 sec
14. Trace Level off
15. Security ON: Local OS Authentication
16. SNMP OFF
17. Listener Parameter File /opt/local/oracle/app/product/11.2.0/dbhome_2/network/admin/listener.ora
18. Listener Log File /opt/local/oracle/app/product/11.2.0/dbhome_2/network/log/listener.log
19. Listening Endpoints Summary...
20.   (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
21.   (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.69.166)(PORT=1521)))
22. Services Summary...
23. Service "PLSExtProc" has 1 instance(s).
24.   Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
25. Service "oradb" has 1 instance(s).
26.   Instance "oradb", status UNKNOWN, has 1 handler(s) for this service...
27. The command completed successfully
28. [root@localhost admin]#

Creating Oracle library objects

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1. create or replace library hytpdtbilldb.Fun_Ext_Proc
2.   as '/opt/local/Oracle_install/Oracle_Call_External_C/libDialPlan.so';

Create function
) online articles, as well as a parameter according to the parameter 1.
But after I joined this parameter has not compile. After removal does not affect the use of the function.
2) corresponds to the numbers and strings binary_integer, varchar2 type. Originally C into an array type parameter is required, but no real Oracle array, only through a string instead.
3) In the course of my testing, and occasionally need to reboot to normal function is called. You can use the process to look at.

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1. create or replace function hytpdtbilldb.Air2Gsi
2. (x binary_integer,y varchar2)
3. return varchar2
4. as
5. language C
6. library hytpdtbilldb.Fun_Ext_Proc 
7. name "Air2Gsi";
8. /