Friday, 16 May 2014

IBM Business Process Manager 8.5 - The (long) story of the missing WebSphere Variables and why my JDBC datasources don't fully work

So, on a newly minted IBM BPM Advanced 8.5.0.1 installation, I noticed that some of the JDBC datasources that are created when I generate the Deployment Environment using the BPMConfig command: -

/opt/IBM/WebSphere/AppServer/bin/BPMConfig.sh -create -de BPM85Advanced.properties 

fail to connect, via the Test Connection button within the WAS Integrated Solutions Console (ISC).

This is what I see: -


specifically: -

The test connection operation failed for data source BPM CellScopedDB data source on server dmgr at node bpm85Node1 with the following exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable DB2_JCC_DRIVER_PATH. View JVM logs for further details.

and: -

The test connection operation failed for data source BPM ESBMediationDB data source on server dmgr at node bpm85Node1 with the following exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable DB2_JCC_DRIVER_PATH. View JVM logs for further details.

Looking in the Deployment Manager's SystemOut.log ( in /opt/IBM/WebSphere/AppServer/profiles/Dmgr01/logs/dmgr ), I see: -

[16/05/14 17:19:16:830 BST] 000000f6 DataSourceCon E   DSRA8040I: Failed to connect to the DataSource.  Encountered "": com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable DB2_JCC_DRIVER_PATH

[16/05/14 17:19:17:032 BST] 000000f6 MBeanHelper   E   Could not invoke an operation on object: WebSphere:name=DataSourceCfgHelper,process=dmgr,platform=dynamicproxy,node=bpm85Node1,version=8.5.5.1,type=DataSourceCfgHelper,mbeanIdentifier=DataSourceCfgHelper,cell=bpm85Cell,spec=1.0 because of an mbean exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable DB2_JCC_DRIVER_PATH

Interestingly, it's only the two cell-scoped data sources that have the issue: -



I have a number of instances of the JDBC Provider: -


only one of which is scoped at the cell level: -


which has two references to the variable DB2_JCC_DRIVER_PATH: -

${DB2_JCC_DRIVER_PATH}/db2jcc4.jar
${UNIVERSAL_JDBC_DRIVER_PATH}/db2jcc_license_cu.jar
${DB2_JCC_DRIVER_PATH}/db2jcc_license_cisuz.jar
${PUREQUERY_PATH}/pdq.jar
${PUREQUERY_PATH}/pdqmgmt.jar

I only have two instances of this WebSphere Variable: -


neither of which are scoped at the cell level.

I quickly resolved this: -

/opt/IBM/WebSphere/AppServer/profiles/Dmgr01/bin/wsadmin.sh -lang jython -user wasadmin -password passw0rd
AdminConfig.create('VariableSubstitutionEntry', '(cells/bpm85Cell|variables.xml#VariableMap_1)', '[[symbolicName "DB2_JCC_DRIVER_PATH"] [description ""] [value "${WAS_INSTALL_ROOT}/jdbcdrivers/DB2"]]')
AdminConfig.save()
AdminNodeManagement.syncActiveNodes()

Sadly this moved me forward, but didn't fully fix the problem.

This is what I now see: -


The test connection operation failed for data source BPM CellScopedDB data source on server dmgr at node bpm85Node1 with the following exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable WAS_INSTALL_ROOT. View JVM logs for further details.

The test connection operation failed for data source BPM ESBMediationDB data source on server dmgr at node bpm85Node1 with the following exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable WAS_INSTALL_ROOT. View JVM logs for further details.

with: -

[16/05/14 18:55:32:539 BST] 00000131 MBeanHelper   E   Could not invoke an operation on object: WebSphere:name=DataSourceCfgHelper,process=dmgr,platform=dynamicproxy,node=bpm85Node1,version=8.5.5.1,type=DataSourceCfgHelper,mbeanIdentifier=DataSourceCfgHelper,cell=bpm85Cell,spec=1.0 because of an mbean exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable WAS_INSTALL_ROOT
[16/05/14 18:55:33:260 BST] 00000131 DataSourceCon E   DSRA8040I: Failed to connect to the DataSource.  Encountered "": com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable WAS_INSTALL_ROOT


in SystemOut.log.

Again, this is a problem with a missing WebSphere Variable - WAS_INSTALL_ROOT - which isn't available 


Again, this is easily fixed: -

/opt/IBM/WebSphere/AppServer/profiles/Dmgr01/bin/wsadmin.sh -lang jython -user wasadmin -password passw0rd
AdminConfig.create('VariableSubstitutionEntry', '(cells/bpm85Cell|variables.xml#VariableMap_1)', '[[symbolicName "WAS_INSTALL_ROOT"] [description ""] [value "/opt/IBM/WebSphere/AppServer
"]]')
AdminConfig.save()
AdminNodeManagement.syncActiveNodes()

Am I out of the woods yet ?

Nope: -


The test connection operation failed for data source BPM CellScopedDB data source on server dmgr at node bpm85Node1 with the following exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable UNIVERSAL_JDBC_DRIVER_PATH. View JVM logs for further details.

The test connection operation failed for data source BPM ESBMediationDB data source on server dmgr at node bpm85Node1 with the following exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable UNIVERSAL_JDBC_DRIVER_PATH. View JVM logs for further details.

and: -

[16/05/14 19:10:41:888 BST] 00000142 MBeanHelper   E   Could not invoke an operation on object: WebSphere:name=DataSourceCfgHelper,process=dmgr,platform=dynamicproxy,node=bpm85Node1,version=8.5.5.1,type=DataSourceCfgHelper,mbeanIdentifier=DataSourceCfgHelper,cell=bpm85Cell,spec=1.0 because of an mbean exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable UNIVERSAL_JDBC_DRIVER_PATH
[16/05/14 19:10:42:989 BST] 00000142 DataSourceCon E   DSRA8040I: Failed to connect to the DataSource.  Encountered "": com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable UNIVERSAL_JDBC_DRIVER_PATH


in SystemOut.log.

Yet again: -


Again, I have a script for that: -

/opt/IBM/WebSphere/AppServer/profiles/Dmgr01/bin/wsadmin.sh -lang jython -user wasadmin -password passw0rd
AdminConfig.create('VariableSubstitutionEntry', '(cells/bpm85Cell|variables.xml#VariableMap_1)', '[[symbolicName "
UNIVERSAL_JDBC_DRIVER_PATH"] [description ""] [value "${WAS_INSTALL_ROOT}/jdbcdrivers/DB2"]]')
AdminConfig.save()
AdminNodeManagement.syncActiveNodes()


with: -

The test connection operation failed for data source BPM CellScopedDB data source on server dmgr at node bpm85Node1 with the following exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable PUREQUERY_PATH. View JVM logs for further details.

[16/05/14 19:15:32:302 BST] 00000142 MBeanHelper   E   Could not invoke an operation on object: WebSphere:name=DataSourceCfgHelper,process=dmgr,platform=dynamicproxy,node=bpm85Node1,version=8.5.5.1,type=DataSourceCfgHelper,mbeanIdentifier=DataSourceCfgHelper,cell=bpm85Cell,spec=1.0 because of an mbean exception: com.ibm.wsspi.runtime.variable.UndefinedVariableException: Undefined variable PUREQUERY_PATH

etc.

This is getting boring now.

Interestingly, the PUREQUERY_PATH variable does exist at the node level, but has no value: -




/opt/IBM/WebSphere/AppServer/profiles/Dmgr01/bin/wsadmin.sh -lang jython -user wasadmin -password passw0rd
AdminConfig.create('VariableSubstitutionEntry', '(cells/bpm85Cell|variables.xml#VariableMap_1)', '[[symbolicName "
PUREQUERY_PATH"] [description ""] [value ""]]')
AdminConfig.save()
AdminNodeManagement.syncActiveNodes()


And ....


So, the long story short .... the two cell-scoped JDBC datasources - BPM CellScopedDB data source and BPM ESBMediationDB data source - are created with regard to variables: -

${DB2_JCC_DRIVER_PATH}/db2jcc4.jar
${UNIVERSAL_JDBC_DRIVER_PATH}/db2jcc_license_cu.jar
${DB2_JCC_DRIVER_PATH}/db2jcc_license_cisuz.jar
${PUREQUERY_PATH}/pdq.jar
${PUREQUERY_PATH}/pdqmgmt.jar

none of which exist at the cell-scoped level :-)

Next time around, this is how I'll fix the problem in one fell swoop: -

/opt/IBM/WebSphere/AppServer/profiles/Dmgr01/bin/wsadmin.sh -lang jython -user wasadmin -password passw0rd
AdminConfig.create('VariableSubstitutionEntry', '(cells/bpm85Cell|variables.xml#VariableMap_1)', '[[symbolicName "DB2_JCC_DRIVER_PATH"] [description ""] [value "${WAS_INSTALL_ROOT}/jdbcdrivers/DB2"]]')
AdminConfig.create('VariableSubstitutionEntry', '(cells/bpm85Cell|variables.xml#VariableMap_1)', '[[symbolicName "WAS_INSTALL_ROOT"] [description ""] [value "/opt/IBM/WebSphere/AppServer"]]')
AdminConfig.create('VariableSubstitutionEntry', '(cells/bpm85Cell|variables.xml#VariableMap_1)', '[[symbolicName "UNIVERSAL_JDBC_DRIVER_PATH"] [description ""] [value "${WAS_INSTALL_ROOT}/jdbcdrivers/DB2"]]')
AdminConfig.create('VariableSubstitutionEntry', '(cells/bpm85Cell|variables.xml#VariableMap_1)', '[[symbolicName "PUREQUERY_PATH"] [description ""] [value ""]]')
AdminConfig.save()
AdminNodeManagement.syncActiveNodes()


next time around.

2 comments:

raj.chaudhary said...

Hi, when am trying to run this command on my windows system I get this exception -

wsadmin>AdminConfig.create('VariableSubstitutionEntry', '(cells/PCCell1/variable
s.xml#VariableMap_1)', '[[symbolicName "WAS_INSTALL_ROOT"] [description ""] [val
ue "C:\IBM\BPM\v8.5"]]')
WASX7015E: Exception running command: "AdminConfig.create('VariableSubstitutionE
ntry', '(cells/PCCell1/variables.xml#VariableMap_1)', '[[symbolicName "WAS_INSTA
LL_ROOT"] [description ""] [value "C:\IBM\BPM\v8.5"]]')"; exception information:

com.ibm.ws.scripting.ScriptingException: WASX7083E: Cannot find config object: "
(cells/PCCell1/variables.xml#VariableMap_1)"


Please advice.

Thanks
Raj

Dave Hay said...

Raj

Is PCCell actually your cell name ? You can check: -

cellID=AdminControl.getCell()

as per the following example: -

AdminConfig.create('VariableSubstitutionEntry', '(cells/'+AdminControl.getCell()+'|variables.xml)', '[[symbolicName "WAS_INSTALL_ROOT"] [description ""] [value "C:\IBM\BPM\8.5"]]')

Also, it's worth noting that Jython/wsadmin doesn't like the combination of the "\" and "v" characters in your value e.g. C:\IBM\BPM\8.5 works, whereas C:\IBM\BPM\v8.5 does not.

You end up with: -

com.ibm.websphere.management.exception.ConfigDocumentSaveException
java.lang.RuntimeException: java.lang.RuntimeException: An invalid XML character (Unicode: 0xb) was found in the element content:C:\IBM\BPM\
8.5

etc.

I'm guessing that the combination of \v equates to Unicode 0xb