URL format for IBM Data Server Driver for JDBC and SQLJ type 2 connectivity

If you are using type 2 connectivity in your JDBC application, and you are making a connection using the DriverManager interface, you need to specify a URL in the DriverManager.getConnection call that indicates type 2 connectivity.

IBM Data Server Driver for JDBC and SQLJ type 2 connectivity URL syntax

connection-options

special-registers

global-variables

query-acceleration

Notes:

¹ property=value pairs, the special-registers string, and the global-variables string can be specified in any order.

IBM Data Server Driver for JDBC and SQLJ type 2 connectivity URL options descriptions

The parts of the URL have the following meanings:

jdbc:db2: or jdbc:db2os390: or jdbc:db2os390sqlj: or jdbc:default:connection

The meanings of the initial portion of the URL are:

jdbc:db2: or jdbc:db2os390: or jdbc:db2os390sqlj:: Indicates that the connection is to a Db2® for z/OS® or Db2 on Linux®, UNIX, and Windows systems server. jdbc:db2os390: and jdbc:db2os390sqlj: are for compatibility of programs that were written for older drivers, and apply to IBM Data Server Driver for JDBC and SQLJ type 2 connectivity to Db2 for z/OS only.
jdbc:default:connection: Indicates that the URL is for a connection to the local subsystem through a Db2 thread that is controlled by CICS®, IMS, or the Java™ stored procedure environment.

database

A name for the database server.

database is the database name that is defined during installation, if the value of the serverName connection property is null. If the value of serverName property is not null, database is a database alias.

property=value;

A property and its value for the JDBC connection. You can specify one or more property and value pairs. Each property and value pair, including the last one, must end with a semicolon (;). Do not include spaces or other white space characters anywhere within the list of property and value strings.

Some properties with an int data type have predefined constant field values. You must resolve constant field values to their integer values before you can use those values in the url parameter. For example, you cannot use com.ibm.db2.jcc.DB2BaseDataSource.TRACE_ALL in a url parameter. However, you can build a URL string that includes com.ibm.db2.jcc.DB2BaseDataSource.TRACE_ALL, and assign the URL string to a String variable. Then you can use the String variable in the url parameter:

    String url = 
     "jdbc:db2:STLEC1" +
     ":user=dbadm;password=dbadm;" +
     "traceLevel=" +
     (com.ibm.db2.jcc.DB2BaseDataSource.TRACE_ALL) + ";";
     Connection con = 
       java.sql.DriverManager.getConnection(url);

specialRegisters=special-register-name=special-register-value,…special-register-name=special-register-value

A list of special register settings for the JDBC connection. You can specify one or more special register name and value pairs. Special register name and value pairs must be delimited by commas (,). The last pair must end with a semicolon (;). For example:

String url = 
  "jdbc:db2:STLEC1" +
  ":user=dbadm;password=dbadm;" +
  "specialRegisters=CURRENT_PATH=SYSIBM,CURRENT CLIENT_USERID=test" + ";";
Connection con = 
  java.sql.DriverManager.getConnection(url);

For special registers that can be set through IBM Data Server Driver for JDBC and SQLJ Connection properties, if you set a special register value in a URL string using specialRegisters, and you also set that value in a java.util.Properties object using the following form of getConnection, the special register is set to the value from the URL string.

getConnection(String url, java.util.Properties info);

If you specify a special register that is supported on the data server, but you specify a value that is not supported on the data server, the IBM Data Server Driver for JDBC and SQLJ returns an error. If you specify a special register that is not supported on the data server, the driver returns a warning.

You can specify only one value for each special register using the specialRegisters parameter. For special registers that take multiple values, such as CURRENT PATH, CURRENT PACKAGE PATH, CURRENT PACKAGESET, you can specify multiple values for a special register by using the DataSource interface and the DB2DataSource.setSpecialRegisters method.

globalSessionVariables=global-variable-name=global-variable-value,…global-variable-name=global-variable-value

A list of global variable settings for the JDBC connection. You can specify one or more global variable name and value pairs.

global variable settings apply only to Db2 for z/OS Version 11 or later data servers.

global variable name and value pairs must be delimited by commas (,). The last pair must end with a semicolon (;). For example:

String url = 
  "jdbc:db2:STLEC1" +
  ":user=dbadm;password=dbadm;" +
  "globalSessionVariables=SESSION.TEST=FAILED,SYSIBMADM.GET_ARCHIVE=Y" + ";";
Connection con = 
  java.sql.DriverManager.getConnection(url);

queryAcceleration=value;

Changes the value of the CURRENT QUERY ACCELERATION special register.

Possible values are:

NONE: Specifies that no query acceleration is done.
ENABLE: Specifies that queries are accelerated only if Db2 determines that it is advantageous to do so. If there is an accelerator failure while a query is running, or the accelerator returns an error, Db2 returns a negative SQLCODE to the application.
ENABLE WITH FAILBACK: Specifies that queries are accelerated only if Db2 determines that it is advantageous to do so. If the accelerator returns an error during the PREPARE or first OPEN for the query, Db2 executes the query without the accelerator. If the accelerator returns an error during a FETCH or a subsequent OPEN, Db2 returns the error to the user, and does not execute the query.
ELIGIBLE: Specifies that queries are accelerated if they are eligible for acceleration. Db2 does not use cost information to determine whether to accelerate the queries. Queries that are not eligible for acceleration are executed by Db2. If there is an accelerator failure while a query is running, or the accelerator returns an error, Db2 returns a negative SQLCODE to the application.
ALL: Specifies that queries are accelerated if they are eligible for acceleration. Db2 does not use cost information to determine whether to accelerate the queries. Queries that are not eligible for acceleration are not executed by Db2, and an SQL error is returned. If there is an accelerator failure while a query is running, or the accelerator returns an error, Db2 returns a negative SQLCODE to the application.