============================================================
All Connectivity: A proprietary method is provided
on com.ibm.db2.jcc.DB2Struct to retrieve the
metadata information of the underlying ROW data.
DB2Struct
/**
* Retrieve the metadata of this Struct object.
*
* @return the description of this Struct object.
* @throws SQLException
* if a database access error occurs or
* this method is called on a closed result set
*/
java.sql.ResultSetMetaData getMetaData()
throws SQLException;
(wsdbu00693474 wsdbu00694927)
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All Connectivity: The following proprietary methods
is provided:
DB2ResultSetMetaData
/**
* Indicates whether the designated column is a
* temporal column,
* including ROW BEGIN (1), ROW END (2), and
* TRANSACTION START ID (3).
*
* @returns -1 if not a temporal related column,
* 1 if it is a ROW BEGIN column,
* 2 if it is a ROW END column, and
* 3 if it is a TRANSACTION START ID column.
*
* @throws java.sql.SQLException
*
* @since JCC 3.62/4.12
*
*/
public int getDBTemporalColumnType (int column)
throws java.sql.SQLException;
In addition, the standard isAutoIncrement method of
ResultSetMetaData will return true for temporal
columns.(wsdbu00690647 wsdbu00690653)
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All Connectivity: Previously, the special characters
carriage returns (#x0d), line feeds (#x0a), and
tabs (#x09) are not escaped during serialization
process from binary XML, now these characters are
escaped. (wsdbu00796615 wsdbu00689711)
____________________________________________________________
T4 Connectivity:Starting from JCC 3.62/4.12,
type 4 connectivity will process the correlation
tokens returned from DB2 for z/OS v10 using
Unicode and IPv6 format when both are supported.
(wsdbu00688943 wsdbu00688953)
____________________________________________________________
T4 Connectivity: When Statement.cancel() is called
(this could be called by the application explicitly
or implicitly), if multithreading is involved, a
NullPointerException might occur. This problem is fixed.
(wsdbu00686193 wsdbu00686196)
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All Connectivity: For processing Instruction tag for
binary xml, if the value is empty, Jcc has an extra
space. For example, if the tag is <?p9?> or <?p10?>,
Jcc put an extra space in the tag so the tag is
<?p9 ?> or <?p10 ?>. This problem is fixed.
(wsdbu00685454 wsdbu00685463)
____________________________________________________________
T4 Connectivity: when enableSysplexWLB sets to
true, when executing a sql statement, the driver
may issue Exception "A DRDA Data Stream Syntax
Error was detected. Reason: 0xcbcb. ERRORCODE=-4499,
SQLSTATE=58009". The problem has been fixed.
(wsdbu00685475 wsdbu00685480)
____________________________________________________________
T4 Connectivity Type: the invocation of the license
stored procedure is enabled against DB2 for
LUW. The invocation occurs even when license jar
exists. No exception will be thrown even when the
invocation fails.
(wsdbu00687816 wsdbu00688023)
____________________________________________________________
SQLJ ALL Connectivity Type:
SQLJ added a new JCC Global property called
db2.jcc.sqljToolsExitJVMOnCompletion.
This is a Boolean property. The default value for this property
is true
i.e. all sqlj tools like db2sqlbinder and db2sqljcustomize
will call System.exit() upon completion. Setting this
to false means that sqlj Tools do not call
System.exit.
(wsdbu00685247 wsdbu00693130)
____________________________________________________________
SQLJ T4 Connectivity Type: Specifying pkgVersion
AUTO during SQLJ Customization will create
packages with version of the form:
YYYY-MM-DD.HH.MM.SS.nnnn
This has changed from the current
AUTO generated package version
String which generates 3 fractional
digits for the seconds.
(146461, wsdbu00687385 )
____________________________________________________________
SQLJ T4 Connectivity Type: Specifying pkgVersion
AUTO during SQLJ Customization will create
packages with version of the form:
YYYY-MM-DD.HH.MM.SS.nnnn
This has changed from the current
AUTO generated package version
String which generates 3 fractional
digits for the seconds.
(146461, wsdbu00687385 )
____________________________________________________________
All Connectivity Types: An application can start JCC
tracing without adding any code in its application nor
having to stop the application by using JCC trace
directives: db2.jcc.tracePolling
db2.jcc.tracePollingInterval. JCC traces PreparedStatement
when an application does
java.sql.Connection.prepareStatement(SQL) but if the
preparedStatement has been created, and the tracing is
dynamically turned on after the creation, then there is no
way to get that statement creation information in the
trace. This feature extends this dynamic trace capability
by dumping properties, result metadata and parameter
metadata for those PreparedStatements which were prepared
while the trace was off as JCC detects the trace is being
turned on.(wsdbu00690865)
____________________________________________________________
All Connectivity Types: Using java.math.BigDecimal to map
data of type DECFLOAT is recommended for applications
seeking higher precision. However, This can be a problem if
applications also want to retrieve special values: NaN,
Infinity and -Infinity which are not supported by
java.math.BigDecimal. Any such attempt would get a generic
conversion error (SqlCode -4220) from JCC driver. The
feature introduces a new SqlCode (-4231), which is returned
when an application makes a call to
java.sql.ResultSet.getBigDecimal(..) method to fetch these
special values, thus a subsequent call to
java.sql.ResultSet's getDouble(..) method may be used to
fetch the special values.(wsdbu00689678)
____________________________________________________________
Type-4 Connectivity: The type 4 driver does not set all
java.sql.BatchUpdateException's update counts to -3
( java.sql.Statement.EXECUTE_FAILED) although at least
one of the atomic batch Multi-row insert operations
fails. The fix alters the behavior by setting all values
in the update counts to -3 if any of the atomic batch
Multi-row insert operations fails.(wsdbu00687778)
____________________________________________________________
T4 Connectivity: The type 4 driver does not set all
java.sql.BatchUpdateException's update counts to -3
( java.sql.Statement.EXECUTE_FAILED) although at least
one of the atomic batch Multi-row insert operations
fails. The fix alters the behavior by setting all values
in the update counts to -3 if any of the atomic batch
Multi-row insert operations fails.(146369,wsdbu00687778)
____________________________________________________________
All Connectivities: As part of DB2 for LUW v9.7 FP4, the
server allows BOOLEAN as parameters for stored
procedures executed via the clients. Corresponding support
for the same is provided in the driver. (wsdbu00686741)
____________________________________________________________
All Connectivities: Starting DB2 for LUW v9.7 FP4, the
server allows ROW type and ARRAY of ROW type as parameters
for stored procedures executed via the clients. The
driver provides the corresponding support
for the same. (wsdbu00685890 wsdbu00689359)
____________________________________________________________
All Connectivities: When autogenerated keys are defined on
the table on which triggers are defined, attempting to query
the autogenerated keys was raising the SQLCODE -723 from the
DB2 server. To fix this issue, JCC introduces a new
boolean property useIdentityValLocalForAutoGeneratedKeys.
The default is false.
A value of true indicates that the driver must use the
Database IDENTITY_VAL_LOCAL() function to determine the
auto-generated keys values.
A value of false indicates that the driver may exploit
alternative Database supported methods, such as SELECT FROM
INSERT to determine the auto-generated key values.
(wsdbu00686072)
____________________________________________________________
Type-4 Connectivity: When enableSysplexWLB
property or enableConnectionConcentrator property
is set to "true", the JCC driver is making
twice the number of client reroute connection
attempts that are configured by
maxRetriesForClientReroute. (wsdbu00692907)
____________________________________________________________
Type-4 Connectivity: Under sysplexWLB environment
when JCC driver is retrying the sysplex members,
an out of memory error is thrown because driver
cannot get a successful database connection to
either one or more surviving members. (wsdbu00692909)
____________________________________________________________
Type-4 XA Connectivity: Under sysplexWLB environment,
an XAER_PROTO error might be thrown when JCC driver
is retrying the sysplex members on a failover attempt.
(wsdbu00692912)
____________________________________________________________
Type-4 XA Connectivity: A NullPointerException might
be thrown along with an XAER_RMFAIL error when
calling DB2XADataSource.getConnection() method in a
multi-threaded application. The problem has been fixed.
(wsdbu00690834)
____________________________________________________________
Type-4 XA Connectivity: A SQLException with
SQLCODE911 (-911) was thrown when TMLCS
(loosely coupled flag) is used with the XA Start
method against DB2 LUW. The problem is fixed.
(wsdbu00690521)
____________________________________________________________
All Connectivities: A new command line diagnostic utility is
introduced to
test and verify a successful connection between the client
application
and DB2 using the current installation/setup. This utility tests
connection
to the specified url that you configure for database access and
verifies the
connection by either executing the sql specified or executing
the sql
"SELECT * FROM SYSIBM.SYSDUMMY1" and also verifies the
execution of a java.sql.DatabaseMetadata API call on that
connection.
For more details about this utility refer to the jcc
documentation.
(wsdbu00692578)
____________________________________________________________
T4 Connectivity Type: Added a new message to jcc tracing to
indicate the java.io.IOException on a socket.read() operation.
(wsdbu00687063) |
