|
Problem IC66104
|
Status: Closed |
COMMUNICATIONS ERROR MESSAGE '{1} IS NULL' FROM IBM DATA SERVER DRIVER FOR JDBC AND SQLJ, ON T4AGENT.SENDREQUEST() |
| product: |
DB2 CONNECT / DB2CONNCT / 950 - DB2 |
| Problem description: |
The following exception may be seen when using an IBM Data
Server Driver for JDBC and SQLJ, Type 4 connection against a
DB2 for z/OS subsystem, if the driver version is 3.57.82
(DB2 9.7 GA) or later:
com.ibm.db2.jcc.am.yn: [jcc][t4][2030][11211][3.57.82] A
communication error occurred during operations on the
connection's underlying socket, socket input stream, or socket
output stream. Error location: T4Agent.sendRequest(). Message:
[jcc][t4][20121][11651]{1} is NULL.. ERRORCODE=-4499,
SQLSTATE=08001
A JDBC trace capturing this error will show a tracepoint similar
to the following, before the error is returned:
[jcc][t4][time:2010-xx-xx-xx:xx:xx.xxx][Thread: <threadname>]
[tracepoint:208]Null socketOutputStream in sendBytes,
haveTransport_: true transportObject_:
com.ibm.db2.jcc.t4.zb@2220222 transportKey_: NULL |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* JDBC applications connecting to DB2 for z/OS via Type 4 *
* connection, using IBM Data Server Driver for JDBC and SQLJ *
* version 3.57.82 or later *
****************************************************************
* PROBLEM DESCRIPTION: *
* The following exception may be seen when using an IBM Data *
* Server Driver for JDBC and SQLJ, Type 4 connection against a *
* DB2 for z/OS subsystem, if the driver version is 3.57.82 *
* (DB2 9.5 Fix Pack 5) or previous : *
* *
* *
* com.ibm.db2.jcc.am.yn: [jcc][t4][2030][11211][3.57.82] A *
* *
* communication error occurred during operations on the *
* *
* connection's underlying socket, socket input stream, or *
* socket *
* output stream. Error location: T4Agent.sendRequest(). *
* Message: *
* [jcc][t4][20121][11651]{1} is NULL.. ERRORCODE=-4499, *
* *
* SQLSTATE=08001 *
* *
* *
* *
* A JDBC trace capturing this error will show a tracepoint *
* similar to the following, before the error is returned: *
* *
* *
* *
* [jcc][t4][time:2010-xx-xx-xx:xx:xx.xxx][Thread: *
* <threadname>] *
* [tracepoint:208]Null socketOutputStream in sendBytes, *
* *
* haveTransport_: true transportObject_: *
* *
* com.ibm.db2.jcc.t4.zb@2220222 transportKey_: NULL *
* *
* This exception is due to an issue with a timer which closes *
* unused internal connections opened against DB2 for z/OS, *
* when there is more than one active transaction on a single *
* JDBC connection. This has been fixed in later versions of *
* the JDBC driver. *
****************************************************************
* RECOMMENDATION: *
* Upgrade the JDBC driver to DB2 version 9.5 Fix Pack 6a or *
* later. This is IBM Data Server Driver for JDBC and SQLJ *
* versions 3.59.81 (JDBC 3.0 specification, db2jcc.jar) and *
* 4.9.78 (JDBC 4.0 specification, db2jcc4.jar). *
**************************************************************** |
| Local Fix: |
To circumvent this issue, create or modify a driver global
properties file with the name
'DB2JccConfiguration.properties' and add the following line to
it:
db2.jcc.maxTransportObjectIdleTime=-1
Then place this file in a directory which is in the CLASSPATH. |
| available fix packs: |
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
First Fixed in DB2 Version 9.5 Fix Pack 6a (IBM Data Server
Driver for JDBC and SQL versions 3.59.81 and 4.9.78). |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 04.02.2010
13.05.2010
30.11.2012 |
| Problem solved at the following versions (IBM BugInfos) |
9.5.FP6,
9.5.FP8,
9.7.
|
| Problem solved according to the fixlist(s) of the following version(s) |
