What kind of problem are you having accessing your DB2 database?
SQL0567N "DB2ADMIN " is not a valid authorization ID. SQLSTATE=42602
If you encounter this error when attempting to access a DB2 Universal Database (UDB):
SQL0805N Package package-name was not found
Possible reasons for these exceptions:
To correct the problem on a DB2 Universal Database (UDB), run this one-time procedure, using the db2cmd interface while connected to the database in question:
The db2ubind.lst and db2cli.lst files are in the bnd directory of your DB2 installation root. Run the commands from that directory.
SQL0805N Package "NULLID.SQLLC300" was not found. SQLSTATE=51002
This error can occur because:
To resolve this problem, rebind the DB2 packages by running the db2cli.lst script found in the bnd directory. For example: db2>@db2cli.lst.
SQLException, with ErrorCode -99,999 and SQLState 58004, with Java "StaleConnectionException: COM.ibm.db2.jdbc.DB2Exception: [IBM][CLI Driver] CLI0119E Unexpected system failure. SQLSTATE=58004", when using WAS40-type data source
An unexpected system failure usually occurs when running in XA mode (two-phase commit). Among the many possible causes are:
To determine whether you have a user name or password problem, look in the db2diag.log file to view the actual error message and SQL code. A message like the following example, with an SQLCODE of -1403, indicates an invalid user ID or password:
2002-07-26-14.19.32.762905 Instance:db2inst1 Node:000 PID:9086(java) Appid:*LOCAL.db2inst1.020726191932 XA DTP Support sqlxa_open Probe:101 DIA4701E Database "POLICY2" could not be opened for distributed transaction processing. String Title: XA Interface SQLCA PID:9086 Node:000 SQLCODE = -1403
To resolve these problems:
db2connect to dbname c:\SQLLIB\bnd>DB2 bind @db2ubind.lst blocking all grant public c:\SQLLIB\bnd>DB2 bind @db2cli.lst blocking all grant public
CLI0119E System error. SQLSTATE=58004 - DSRA8100 : Unable to get a XAconnection or DSRA0011E: Exception: COM.ibm.db2.jdbc.DB2Exception: [IBM][CLI Driver] CLI0119E Unexpected system failure. SQLSTATE=5800
If you encounter this error when attempting to access a DB2 Universal Database (UDB) data source:
If you encounter this error while running DB2 on Red Hat Linux, the max queues system wide parameter is too low to support DB2 while it acquires the necessary resources to complete the transaction. When this problem exists, the exceptions J2CA0046E and DSRA0010E can precede the exception DSRA8100E.
To correct this problem, edit the /proc/sys/kernal/msgmni file to increase the value of the max queues system wide parameter to a value greater than 128.
COM.ibm.db2.jdbc.DB2Exception: [IBM][CLI Driver][DB2/NT] SQL0911N The current transaction has been rolled back because of a deadlock or timeout. Reason code "2". SQLSTATE=40001
This problem is probably an application-caused DB2 deadlock, particularly if you see an error similar to the following when accessing a DB2 data source:
ERROR CODE: -911 COM.ibm.db2.jdbc.DB2Exception: [IBM][CLI Driver][DB2/NT] SQL0911N The current transaction has been rolled back because of a deadlock or timeout. Reason code "2". SQLSTATE=40001
To diagnose the problem:
To verify that you have a deadlock:
To resolve the problem:
For example, consider the scenario where transaction A deletes the row with column1=10 and transaction B does a scan where column1>8 and column1<12. With DB2_RR_TO_RS off, transaction B waits for transaction A to commit or rollback. If transaction A rolls back, the row with column1=10 is included in the result set of the transaction B query. With DB2_RR_TO_RS on, transaction B does not wait for transaction A to commit or rollback. Transaction B immediately receives query results that do not include the deleted row. Setting DB2_RR_TO_RS effectively changes locking behavior, thus avoiding deadlocks.
"COM.ibm.db2.jdbc.DB2ConnectionPoolDataSource" could not be found for data source ([data-source-name])"
This error is denoted by message DSRA8040I: Failed to connect to the DataSource.
This error usually occurs when the class path of the DB2 JDBC driver is set correctly to ${DB2_JDBC_DRIVER_PATH}/db2java.zip but the environment variable DB2_JDBC_DRIVER_PATH is not set.
This error can also occur if you are using DB2 Version 7.1 or 7.2 and you have not yet run usejdbc2. This might be the problem if your path is correct but you still receive this error.
To confirm this problem:
To correct this problem: Add the variable DB2_JDBC_DRIVER_PATH with value equal to the directory path containing the db2java.zip file.
Error 10500 (E_Fatal) returns when an attempt is made to either publish or inquire on an entity exceeding 255 characters in one of its fields.
This error usually occurs when you make an attempt to either publish or inquire on an entity exceeding 255 characters in one of its fields. This is less obvious when using non-English characters, as the real limit is reached before 255 visual characters are displayed.
To correct this problem: Accept this as a limitation in using DB2 Version 7 on z/OS. Do not exceed the 255 character limit.
Unexpected errors, which might involve "Database is read-only" messages, occur inconsistently when a J2EE 1.2 application component uses a Version 4 data source with a DB2 JDBC provider
Symptom | You encounter unexpected errors on a sporadic basis when using a Version 4 data source with a DB2 JDBC provider in a J2EE-1.2 level application component. Although your application component does not set the read-only property of connections to true (that is, does not perform a Connection.setReadOnly(true) method call), your trace data might contain a "Database is read-only" message. |
Problem | An application component that previously used the connection set
the read-only property to true, but returned the connection to the connection
pool without resetting the read-only value to false. (Note that the other
application component could be a CMP bean, with code generated by the EJB
container. This automatically generated code might have set the read-only
property of connections to true). The following message text is an example of data that you might find in an exception stack trace that corresponds to this problem: java.sql.SQLException: DB2JDBCSQLCompiler Received Error in Method compileSQL -> Insert/Update/Delete not honored. Database is read Only at COM.ibm.db2os390.sqlj.jdbc.DB2JDBCSQLCompiler.compileSQL(DB2JDBCSQLCompiler.java:205) at COM.ibm.db2os390.sqlj.jdbc.DB2SQLJStatement.executeUpdate(DB2SQLJStatement.java:726) at com.ibm.ejs.cm.proxy.StatementProxy.executeUpdateCommon(StatementProxy.java:440) at com.ibm.ejs.cm.proxy.StatementProxy.executeUpdate(StatementProxy.java:417) at ejb.C2Bean.run(C2Bean.java:70) at ejb.EJSRemoteStatelessC2_63bc8377.run(EJSRemoteStatelessC2_63bc8377.java:30) at ejb._EJSRemoteStatelessC2_63bc8377_Tie.run(_EJSRemoteStatelessC2_63bc8377_Tie.java:150) at ejb._EJSRemoteStatelessC2_63bc8377_Tie._invoke(_EJSRemoteStatelessC2_63bc8377_Tie.java:76) at com.ibm.ws390.orb.ServerRegionBridge.invoke(ServerRegionBridge.java:538) at com.ibm.ws390.orb.ORBEJSBridge.invoke(ORBEJSBridge.java:170) |
Recommended response | For Version 4 data sources that are configured with a DB2 JDBC provider, set a custom property that directs Application Server to reset the read-only property of connections before returning them to the connection pool. You can set this custom property through the administrative console: click Resources > JDBC Providers > JDBC Provider > Data Sources (Version 4) > Data source > Custom Properties. Define a new custom property named resetReadOnly with a value of true. |