Home > Articles > Programming > Java

  • Print
  • + Share This
Like this article? We recommend

Calling Stored Procedures in JDBC Programs

Stored procedures are part and parcel of any database application that enables a lot of business logic to be stored as application logic in the database in compiled form. Oracle 8i supports two types of stored procedures, namely, PL/SQL and Java. This section highlights the calling of both PL/SQL stored procedures and Java stored procedures from JDBC programs.

Calling PL/SQL Stored Procedures

PL/SQL stored procedures are called from within JDBC programs by means of the prepareCall() method of the Connection object created above. A call to this method takes variable bind parameters as input parameters as well as output variables and creates an object instance of the CallableStatement class.

The following line of code illustrates this:

CallableStatement stproc_stmt = conn.prepareCall
     ("{call procname(?,?,?)}");

Here conn is an instance of the Connection class.

The input parameters are bound to this object instance using the setXXX() methods on the CallableStatement object. For each input bind parameter, a setXXX() method (e.g., setInt(), setString(),) is called. The following line of code illustrates this:


The output parameters are bound to this object instance using registerOutParameter() method on the CallableStatement object, as shown below:

stproc_stmt.registerOutParameter(2, OracleTypes.CHAR);

The above statement registers the second parameter passed to the stored procedure as an OUT parameter of type CHAR. For each OUT parameter, a registerOutParameter() method is called.

Once a CallableStatement object has been constructed, the next step is to execute the associated stored procedure or function. This is done by using the executeUpdate() method of the CallableStatement object. The following line of code illustrates this using the stproc_stmt object created above:


prepareCall() Method

The three different kinds of stored sub-programs, namely, stored procedures, stored functions, and packaged procedures and functions can be called using the prepareCall() method of the CallableStatement object.

The syntax for calling stored functions is as follows:

CallableStatement stproc_stmt = conn.prepareCall
     ("{ ? = call _funcname(?,?,?)}");

The first ? refers to the return value of the function and is also to be registered as an OUT parameter.

Packaged Procedures and Functions

Packaged procedures and functions can be called in the same manner as stored procedures or functions except that the name of the package followed a dot "." prefixes the name of the procedure or function.

Once the stored procedure or function has been executed, the values of the out parameters can be obtained using the getXXX() methods (for example, getInt() and getString()) on the CallableStatement object. This is shown below:

String op1 stproc_stmt.getString(2);

This retrieves the value returned by the second parameter (which is an OUT parameter of the corresponding PL/SQL stored procedure being called and has been registered as an OUT parameter in the JDBC program) into the Java String variable op1.

A complete example is shown below. Consider a procedure that returns the highest paid employee in a particular department. Specifically, this procedure takes a deptno as input and returns empno, ename, and sal in the form of three out parameters.

The procedure is created as follows:

       (ip_deptno NUMBER,
       op_empno OUT NUMBER,
       op_ename OUT VARCHAR2,
       op_sal OUT NUMBER)
 v_empno NUMBER;
 v_ename VARCHAR2(20);
 v_sal NUMBER;
 SELECT empno, ename, sal
 INTO v_empno, v_ename, v_sal
 FROM emp e1
 WHERE sal = (SELECT MAX(e2.sal)
     FROM emp e2
     WHERE e2.deptno = e1.deptno
     AND e2.deptno = ip_deptno)
  AND deptno = ip_deptno;
 op_empno := v_empno;
 op_ename := v_ename;
 op_sal := v_sal;

Here we assume that there is only one highest paid employee in a particular department.

Next we write the JDBC program that calls this procedure. This is shown below:

import java.sql.*;

public class StProcExample {
 public static void main(String[] args)
 throws SQLException {
int ret_code;
Connection conn = null;
 try {
  //Load and register Oracle driver
  DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
 //Establish a connection

 conn = DriverManager.getConnection("jdbc:oracle:thin:@training:1521:
 Oracle", "oratest", "oratest");
 int i_deptno = 10;
 CallableStatement pstmt = conn.prepareCall("{call p_highest_
 pstmt.setInt(1, i_deptno);
 pstmt.registerOutParameter(2, Types.INTEGER);
 pstmt.registerOutParameter(3, Types.VARCHAR);
 pstmt.registerOutParameter(4, Types.FLOAT);

 int o_empno = pstmt.getInt(2);
 String o_ename = pstmt.getString(3);
 float o_sal = pstmt.getFloat(4);
 System.out.print("The highest paid employee in dept "
 +i_deptno+" is: "+o_empno+" "+o_ename+" "+o_sal);
  } catch (SQLException e) {ret_code = e.getErrorCode();
   System.err.println(ret_code + e.getMessage()); conn.close();}

Calling Java Stored Procedures

Java stored procedures can also be called from JDBC programs using the corresponding call specifications created to publish the Java methods into the Oracle 8i database. In other words, calling the published call specs executes the corresponding Java methods and the syntax for calling these is the same as calling PL/SQL stored procedures.

Here we will use the Java stored procedures created in Chapter 2, "Java Stored Procedures." The following JDBC program calls the packaged procedure pkg_empmaster.fire_emp (a Java stored procedure that corresponds to the Java method empMaster.fireEmp()). Specifically it deletes the record in emp table where empno = 1002.

Before executing the above Java stored procedure, the record corresponding to empno 1002 in emp table is as follows:

EMPNO      ENAME      JOB       MGR        HIREDATE  SAL        COMM       DEPTNO
---------- ---------- --------- ---------- --------- ---------- ---------- ----------
1002       DAVID      ANALYST   1001       01-JAN-01 6000       1000       10

The JDBC program to call the Java stored procedure is as follows:

import java.sql.*;
public class JavaProcExample {
 public static void main(String[] args)
 throws SQLException {
int ret_code;
Connection conn = null;
 try {
  //Load and register Oracle driver
  DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
 //Establish a connection

 conn = DriverManager.getConnection("jdbc:oracle:thin:@training:1521:
 Oracle", "oratest", "oratest");
 int i_empno = 1002;
 CallableStatement pstmt = 
 conn.prepareCall("{call pkg_empmaster.fire_emp(?)}");
 pstmt.setInt(1, i_empno);

  } catch (SQLException e) {ret_code = e.getErrorCode(); 
   System.err.println(ret_code + e.getMessage()); conn.close();}

The output of the above program can be verified as follows:

SQL> select * from emp where empno = 1002;

no rows selected

  • + Share This
  • 🔖 Save To Your Account

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020