从 Java 通过数据库链接调用 PL-SQL 过程

Question

here my objective is to call a procedure over a database link in java. procedure takes one input and has got cursor as an output. to check if my code is working properly, I created dummy procedure in my database and tried executing. it is working, able to get cursor and play with it. however when i am calling some procedure over database link, getting error as

java.sql.SQLException: ORA-06550: line 1, column 7:
PLS-00201: identifier 'HR_CLICK_GET_EMP_DETAILS@IBSLUAT1.WORLD' must be declared

I had a call with developer who had created these procedure. according to him procedures exist at this end and access is already given to my user.

Now my questions and queries are

1. is there something different, i have to do while calling a procedure over database link(code is below)

2. what are the things i should be asking to sql developer. by the way database link is right.

    String prc_name = "HR_CLICK_GET_CM_AND_ABOVE@IBSLUAT1.WORLD(?,?)"; String runSP = "{ call "+prc_name+" }"; String runSP1 = "{ call get_user_by_userId(?,?) }"; this one is working try { Class.forName("oracle.jdbc.driver.OracleDriver"); Connection conn = DriverManager.getConnection( "jdbc:oracle:thin:@xx.xx.xxx.xx:port:SERVICE", "username", "password"); // uat CallableStatement cs = conn.prepareCall(runSP); cs.setString(1, "705151"); cs.registerOutParameter(2, OracleTypes.CURSOR); cs.execute(); // get refcursor and convert it to ResultSet ResultSet resultSet = (ResultSet) cs.getObject(2); ResultSetMetaData rsmd = resultSet.getMetaData(); int columnCount = rsmd.getColumnCount(); System.out.println("Total Columns in ResultSet : "+columnCount); System.out.println("Now Analyzing column one by one:\\n\\n-----------------------------------------------"); for (int i = 1; i <= columnCount; i++ ) { String name = rsmd.getColumnName(i); System.out.println("Column No:"+i+">>>>>>>>"+name); } } catch(SQLException s) { s.printStackTrace(); } catch(ClassNotFoundException s) { s.printStackTrace(); }

thanks in advance

Ashish

Answer 1

尝试使用拥有该过程的 Oracle 用户名作为前缀：

username.HR_CLICK_GET_EMP_DETAILS@IBSLUAT1.WORLD

Answer 2

Answer is "synonym".

SQL Developer has created a synonym for HR_CLICK_GET_EMP_DETAILS as HR_CLICK_GET_EMP_DETAILS@IBSLUAT1.WORLD

that is what he informed me, I could not quite wrap my head around that but able to hit the procedure.

but now , able to get get the metadata of a result set but unable to traverse rows.

I'm getting an error:

java.sql.SQLException: ORA-24338: statement handle not executed

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)
at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:207)
at oracle.jdbc.driver.T4CStatement.fetch(T4CStatement.java:1018)
at oracle.jdbc.driver.OracleResultSetImpl.close_or_fetch_from_next(OracleResultSetImpl.java:291)
at oracle.jdbc.driver.OracleResultSetImpl.next(OracleResultSetImpl.java:213)
at ashishtest.StoredProcedureCursor.main(StoredProcedureCursor.java:80)

I guess, new forum is required for this error.

also I am not marking this as solved as not sure how solution works.