DB2 java Stored Procedure call return error SQLCODE=-440, SQLSTATE=42884

问题:

I am doing a simple stored procedure call to DB2. While it calls the stored procedure, it always returns this error:

DB2 SQL Error: SQLCODE=-440, SQLSTATE=42884, SQLERRMC=MEDIAN_RESULT_SET;PROCEDURE, DRIVER=3.66.46 

========== Java code:

String JDBC_DRIVER = "com.ibm.db2.jcc.DB2Driver"; // STEP 2: Register JDBC driver Class.forName(JDBC_DRIVER);  // STEP 3: Open a connection System.out.println("Connecting to database...");  conn = DriverManager.getConnection(DB_URL, USER, PASS);  // to execute the stored procedure. System.out.println("CALL median_result_set(?)"); String sql = "CALL median_result_set(?)"; CallableStatement stmt1 = conn.prepareCall(sql); stmt1.registerOutParameter(1, Types.DOUBLE);  stmt1.execute(); System.out.println("jdbcadapter->callproc after execute " + sql); stmt1.close();  conn.close(); 

============== The db2 clp command line worked:

c:SP>db2 call median_result_set(?)  Value of output parameters   --------------------------  Parameter Name  : MEDIANSALARY   Parameter Value : +7.68582000000000E+004  Result set 1 -------------- NAME      JOB   SALARY --------- ----- --------- Marenghi  Mgr    77506.75 O'Brien   Sales  78006.00 

================ The stored procedure definition:

CREATE PROCEDURE median_result_set -- Declare medianSalary as OUT so it can be used to return values (OUT medianSalary DOUBLE) RESULT SETS 2 LANGUAGE SQL BEGIN     DECLARE v_numRecords INT DEFAULT 1;    DECLARE v_counter INT DEFAULT 0;     DECLARE c1 CURSOR FOR       SELECT salary FROM staff        ORDER BY CAST(salary AS DOUBLE);    -- use WITH RETURN in DECLARE CURSOR to return a result set   DECLARE c2 CURSOR WITH RETURN FOR    SELECT name, job, salary    FROM staff     WHERE CAST(salary AS DOUBLE) > medianSalary    ORDER BY salary;    -- use WITH RETURN in DECLARE CURSOR to return another result set  DECLARE c3 CURSOR WITH RETURN FOR     SELECT name, job, salary     FROM staff     WHERE CAST(salary AS DOUBLE) < medianSalary     ORDER BY SALARY DESC;   DECLARE CONTINUE HANDLER FOR NOT FOUND    SET medianSalary = 6666;    -- initialize OUT parameter  SET medianSalary = 0;   SELECT COUNT(*) INTO v_numRecords FROM STAFF;   OPEN c1;     WHILE v_counter < (v_numRecords / 2 + 1) DO      FETCH c1 INTO medianSalary;      SET v_counter = v_counter + 1;   END WHILE;   CLOSE c1;    -- return 1st result set, do not CLOSE cursor   OPEN c2;    -- return 2nd result set, do not CLOSE cursor   OPEN c3; END @ 

回答1:

Basically "SQLCODE=-440, SQLSTATE=42884" means that stored procedure can not be found.

I saw a very common cause is the argument doesn't match.

For my case, I noticed that in java code, I have to put the schema name in front of the stored procedure name, e.g, instead of median_result_set(?), I should do SCHEMANAME.median_result_set(?)

The SCHEMANAME for this SP can be found with some DB admin tools.

The reason why I don't need to specify the schema name from the command line: it seems that when I call SP from CLP command line with the same user when I created that SP, there is no need to the schema name (because internally they match up). Of course, it is always right if you specify the schema at the command line. I observed DB2 internally uses user name as schema name. E.g, if "ADMINISTRATOR" created a SP, the string "ADMINISTRATOR" is its schema name, as long as I see on Windows.

回答2:

You cannot find it because it actually doesn't exist... Try to call MEDIAN_RESULT_SET instead or to create the procedure as "median_result_set"...

Just in case someone is having the same issue ;)

回答3:

The error # means 42884 No routine was found with the specified name and compatible arguments. Check on url: http://publib.boulder.ibm.com/infocenter/db2luw/v9r5/index.jsp?topic=%2Fcom.ibm.db2.luw.messages.doc%2Fdoc%2Frdb2stt.html

and search for 42884 error code. Hope you can solve your query by yourself.

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