versions:
- WSO2 4.6.0
- Oracle 11g
I Have this procedure in an Oracle DB:
PROCEDURE SEARCHCONTRACT ( CONTRACTNUM IN OKC_K_HEADERS_B.CONTRACT_NUMBER%TYPE
, cur_out IN OUT RefCursor)
....
The procedure is working fine!
Note that cur_out IN OUT RefCursor!
I have no clue on how to handle that parameter in a DBLookup mediator! This mediator does not have any place to inform whether each parameter is "IN" or "OUT" and I'm not sure if setting the direction (IN/OUT) would be enough.
Thanks in advance for any help!
I believe you can use WSO2 Data Services Server (DSS) or your requirement.
You can download WSO2 DSS from http://wso2.com/products/data-services-server/
It has support for Oracle RefCursor.
You can then use the data service via WSO2 ESB.
Following article might help.
http://wso2.com/library/tutorials/use-oracle-ref-cursors-wso2-data-services-server
just a thought. You could try to implement a pl/sql function that call that prodecure and return the value. This way you could get the result with the ddl SELECT MyfUCNTION(PARAM1) FROM DUAL.
You could also convert the procedure into a function.
Hope it helps!
Related
I have setup a linked server in SQL Server 2008 R2 in order to access an Oracle 11g database. The MSDASQL provider is used to connect to the linked server through the Oracle Instant Client ODBC driver. The connection works well when using the OPENQUERY with the below syntax:
SELECT *
FROM OPENQUERY(LINKED_SERVER, 'SELECT * FROM SCHEMA.TABLE')
However, went I try to use a four part name using the below syntax:
SELECT *
FROM LINKED_SERVER..SCHEMA.TABLE
I receive the following error:
Msg 7318, Level 16, State 1, Line 1
The OLE DB provider "MSDASQL" for linked server "LINKED_SERVER" returned an invalid column definition for table ""SCHEMA"."TABLE"".
Does anyone have any insight on what my be causing the four part name query to fail while the OPENQUERY one works without any problems?
The correct path to follow is to use OPENQUERY function because your linked server is Oracle: the four name syntax will work fine for MSSQL servers, essentially because they understand T-SQL.
With very simple queries, a 4 part name can accidentally work but not often if you are in a real scenario. In your case, the SELECT * is returning all the columns, and in your case one of the column definition is not compatible with SQL Server. Try another table or try to select a single simple column (e.g. a CHAR or a NUMBER), maybe it will work without problem.
In any case, using distributed queries can be tricky sometime. Database itself does some optimizations before executing commands, so it is important for the database to know what it can do and what it can't. If the DB thinks the linked server is MSSQL, it will take some action that may not work with Oracle.
When using four part name syntax with a linked DB different from MSSQL, you will have other problems as well, for example using database builtin functions (i.e. to_date() Oracle function will not work because MSSQL would want to use its own convert() function, and so on).
So again, if the linked server is not a MSSQL, the right choice is to use OPENQUERY and passing it a query that use a syntax valid against the linked server SQL dialect.
If you use the OLEDB provider for Oracle you can query without using openquery
I intend to use: JdbcTokenStore.
As far as I can tell it uses two tables: oauth_access_token and oauth_refresh_token
I can reverse engineer the table structure; it isn't quite clear if there are references from one table to the other for which I should create a foreign key or not?
Is there a postgres specific schema somewhere? Or another schema that I can refer to?
Batch, for instance, includes the schemas in their dist. I wonder if Oauth2 could do that also?
Many thanks,
Matt
the schema is checked into git as well:
https://github.com/spring-projects/spring-security-oauth/blob/master/spring-security-oauth2/src/test/resources/schema.sql
when using postgres you should use bytea instead of LONGVARBINARY
I have a StoredProcedure that returns a simple table containing several records:
DECLARE #STEPS_TABLE AS TABLE (OrchestrationID uniqueidentifier, [Message] nvarchar(1000));
-- LOADING THE VALUES HERE
SELECT * FROM #STEPS_TABLE As Step FOR XML AUTO, XMLDATA, ELEMENTS
I used the SQL Transport Schema Generation Wizard to create my schema and could configure the port correctly. If I use this schema on my orchestration, it works perfectly. BizTalk starts one instance of the orchestration everytime the #STEPS_TABLE has more than 1 record.
Reading Microsoft technical documentation, they recommend to get several messages in one call and then use the XML pipeline to disassemble the multi-row BizTalk message into a single-row BizTalk message.
I haven't used the XML pipeline before, so I tried the provided steps but couldn't get it to work.
Could somebody provide me a link to a "how to" (didn't find anything until now, after several hours of searching) or give me some hints to succeed.
Thanks in advance.
... some hours later I could figure it out myself. So if anybody comes across the same issue as me, here you have some guidelines to make it work on your environment.
At the end I followed a different walkthrough from Microsoft and avoided the pipeline recommendation altogether. The documentation I found is called "Disassembling Result Sets Using the SQL Adapter" and does exactly what i was looking for. You can just follow the whole walkthrough from Microsoft but avoid the creation of the send port and make some little adjustment on the receive port.
After following the technical document you will end up with two schemas, I will call them message and envelope (contains several messages) for the sake of this excercise. In your orchestration you can create a receiving port that maps to the message and then when you configure it as a SQL Port and you link it to your stored procedure (or select statement), you only have to change the Document Root Element Name to the envelope root name; the XML Receive pipeline (provided by default in BizTalk 2006) will do the magic of disassembling the messages contained in the envelope and instantiating an orchestration for each message.
The Microsoft "Disassembling Result Sets Using the SQL Adapter" walkthrough can be found under:
http://msdn.microsoft.com/en-us/library/aa562098(v=bts.20).aspx
Mission accomplished :)
We have our application developed and tested with sql server 2008r2 using ASP.NET on windows server. Now we have a requirement to move the database from windows to oracle on red hat linux.
We haven't yet setup the infrastructure to test the same. I would like to know in the meantime if anyone has successfully done this kind of thing. Pointers to any resources will be a great advantage.
Is changing the connection string the only thing that needs to be done or are there any specific configuration in Linux to allow this?
I will verify this once I get the environment ready, but as a headstart if anyone has any similar experience, do share.
Thanks in advance.
P.S: For migration of table structure, storedprocedures etc to oracle we will be using the Sql Developer tool.
I would like to answer my question,because, migration to oracle is not that straight forward, but there are some tips that may help anyone migrate to oracle on windows or linux with less headache.
The first thing the Sql developer tool does a good job of migrating sqlserver schema and data to oracle including storedprocedures, constraints, triggers etc.
It also does a good job of datatype mapping and provides option to remap datatype if required.
Some caveats and precautions.
Oracle has a limitation on the length of stored procedure names of about 30 characters. This is the area you need to resort to some manual renaming as when migration SP's or identifiers whose name is greater than 30 characters may get truncated.
The other common issue that you may face is respect to date insertion and formatting. You can use the following snippet to avoid the headache. The common error will be "Not a valid month."
OracleConnection conn = new OracleConnection(oradb); // C#
conn.Open();
OracleGlobalization session = conn.GetSessionInfo();
session.DateFormat = "DD.MM.RR"; // change the format as required here
conn.SetSessionInfo(session);
The most annoying error would be well character to numeric conversion when inserting or updating data or related error.
The issue here is when you add parameters to command object for sql provider, the binding happens by name, but forOracle.DataAccess the default binding is by position. Here's the post that saved me lot of headache.
ODP .NET Parameter problem with uint datatype
What you can do is set the command.BindByName = true;
When migrating SP's that returns data, oracle creates an out parameter ref cursor. This needs to be taken care of while constructing command parameters.
For e.g.
OracleParameter refp = new Oracle.DataAccess.Client.OracleParameter("cv_1", OracleDbType.RefCursor, ParameterDirection.InputOutput);
command.Parameters.Add(refp);
Also the sqlserver requires parameters to SP be prefixed with "#" and oracle doesn't. This can be easily taken care of in your data layer.
Also since there is no bit datatype in Oracle, number(1) works fine. You may need to convert your bool to numeric, if required.
Hope this helps someone avoid a migration headaches. I will post more issues if I encounter.
Try to be more clear, I'm in lack of ideas in this problem, even it sounds like a classic.
My application is running on weblogic 10.3.3 application server, and for database I am using Oracle database 11g. My problem is that there is table in db, let's say "user.", there is column, let's say "columnA", in this table. This table is updating by some module of application.
What I want if when value of column is "abc.", then I have to show alert to console(IP). {IP can be retrieved from DB as it is configured in DB. this ip will be other linux system other than linux machine where oracle database is installed.} Updating is continuously done on my table from module of application. Please tell me from where should I start?, what should I read. I am not able to understand what should be approach. Any help is much appreciated.
Can u provide me any begginner.s link of oracle db listener?
You probably want to look at setting up a Trigger in the database
http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28370/triggers.htm
An alternative to a trigger would be to log update queries against the table (to a log file) and have a process monitor the log, sending out alerts when something happens.