Connecting to Oracle express

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Paul
Paul 2014-7-8
评论： Paul 2014-7-11
I am having troubles connecting to oracle express db. When i am trying to connect to the database i get the following error:
>> conn = database('test_db','','zxcv','Vendor','Oracle',...
'DriverType','oci','Server','remotehost','PortNumber',
1234)
Error using database (line 309)
Java exception occurred:
java.lang.UnsatisfiedLinkError: no ocijdbc11 in
java.library.path
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Rodrigo
Rodrigo 2014-7-11
编辑：Rodrigo 2014-7-11
you're welcome... So, i'm Rodrigo Muñoz!!! See you my friend!

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采纳的回答

Sruthi Ayloo
Sruthi Ayloo 2014-7-10
The usage of database function is as follows:
conn = database('databasename','username','password','oracle.jdbc.driver.OracleDriver',jdbc:oracle:thin:@IP_ADDRESS_OF_DATABASE_SERVER:1521:databasename');
In the Query Builder, the database 'Name' should be the same as the suffix after the port number in the database 'URL', that is, the 'databasename' must be same as the SID parameter at the end of the 'databaseurl'. In your code, the instance parameter should be “dbname”.
Check out this link as well: http://www.mathworks.com/matlabcentral/answers/94155-why-do-i-receive-the-error-io-exception-connection-refused-with-oracle-10g-and-the-database-toolb
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Paul
Paul 2014-7-10
First of all, thank you very much for the quick reply Sruthi, I do not know the database name neither the password and i never created one. I only know that i created a password for oracle express database during the installation.

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更多回答（4 个）

Sruthi Ayloo
Sruthi Ayloo 2014-7-9
The Oracle DLL that the Database drivers need could not be detected in MATLAB. Add the location of the Oracle DLLs path to the following file and restart MATLAB.
$MATLAB/toolbox/local/javalibrarypath.txt.
For more information, refer to Step 3 in http://www.mathworks.com/help/database/ug/oracle-jdbc-windows.html
Paul
Paul 2014-7-9
i followed your procedure as well as the procedure of mathworks step 3 but the error persists and i dont know why, i even added the .dll file manually in matlab.
my javalibrarypath.txt contains these elements in my case:
C:\oraclexe\app\oracle\product\11.2.0\server\oci\lib C:\oraclexe\app\oracle\product\11.2.0\server\bin\ocijdbc11.dll
Paul
Paul 2014-7-10
I tried a different connection command now which gives me more details concerning the error. This is how i connect:
conn = database('','username','pwd',...
'Vendor','Oracle',...
'URL',['jdbc:oracle:thin:@(DESCRIPTION = ' ...
'(ADDRESS = (PROTOCOL = TCP)(HOST = sname)' ...
'(PORT = 123456)) (CONNECT_DATA = ' ...
'(SERVER = DEDICATED) (SERVICE_NAME = dbname) ) )']);
nothing shows up afterwards the command, but when i have a look at the variable "conn" it indicates the following
val =
Instance: ''
UserName: 'username'
Driver: []
URL: []
Constructor: [1x1 com.mathworks.toolbox.database.databaseConnect]
Message: 'Error de E/S: The Network Adapter could not establish the connection'
Handle: 0
TimeOut: 5
AutoCommit: 'off'
Type: 'Database Object'
Any suggestions?
Paul
Paul 2014-7-11
Question was answered by Rodrigo

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