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Not all the questions on this page are directly related to Canvas deployment, e.g. questions on Oracle database. Some of these questions were asked by participants during the Canvas training sessions. We have answered those here for the larger benefit of the Canvas Developer community.

...

Expand
titleHow to start/stop Tomcat server manually without using Eclipse?
  1. To start the Tomcat server, double-click the startup.bat file in the Tomcat folder (e.g. ‘D:\Canvas\apache-tomcat-7.0.67\bin’).
  2. To stop the Tomcat server, press CTRL + C in the command prompt.


Note
Expand
titleHow to change the What are the changes to be done when context root of the application is changed?

Let’s assume that the following are the context root details of the application is dliteweb.

In the JBoss EAP 7.x Installed folder (e.g. 'D:\Canvas\JBoss EAP 7.x Installed folder\standalone\deployments\ctmodelhouse.war \WEB-INF\jboss-web.xml’)

: 

  • DATA_SOURCE_NAME : DliteCTDS
  • SCHEMA_NAME : CT_MIG
  • SCHEMA_NAME_PWD : CT_MIG
  • CONTEXT_ROOT : dliteweb
  • WAR_NAME : dliteweb
  • WORK_FOLDER : D:/Canvas19/dliteweb

As a sample reference, the following steps indicate the changes required for the JBoss app server and Oracle database environments. For other app server and database combinations, appropriate changes need to be done in the relevant files. 
Context Root changes

1. In the application WAR, in the JBoss folder, specify the context root in the \WEB-INF\jboss-web.xml file, as shown in the following code snippet:

Code Block
languagexml
<context-root>
<dliteweb>
<CONTEXT_ROOT> </context-root>
<!-- For example -->
<context-root> dliteweb </context-root>
Note
title
This step is applicable only for the JBoss application server. If you use Tomcat or any other app server, proceed to step 
2. 
 
 In the CTResources.jar
 folder (e.g. ‘D:\Canvas\ JBoss EAP 7.x Installed folder\CTWeb
, in the ....\Ctweb\Dependencies\Canvas\CTResources.jar\CanvasApplicationContext.
json’)
json file, specify the context root
 in CanvasApplicationContext.json file
, as shown in the following code snippet:
 Code Block
languagebash
{
	"contextRoot": "
<dliteweb>
<CONTEXT_ROOT>",
	"applicationId": "MODELHOUSE",
	"displayName": "CTWEB",
	"isService": "Y"
}
# For example
{
	"contextRoot": "dliteweb",
	"applicationId": "MODELHOUSE",
	"displayName": "CTWEB",
	"isService": "Y"
}
Resource
3. In the 
 application 
CtwebResource.jar
 folder (e.g. ‘D:\Canvas\ JBoss EAP 7.x Installed folder\CTWeb\CTWebResources
, in the ....\Ctweb\CtwebResources\src\main\resource\
securityconfig.properties’)
Ctwebsecurityconfig.properties file, specify the default context root
 in securityconfig.properties file
, 
 as 
as shown in the following code snippet: 
 Code Block
languagexml
DEFAULT_CONTEXT_ROOT=/
<dliteweb>
<CONTEXT_ROOT>
ALL_CONTEXT_ROOTS=<CONTEXT_ROOT>
<!-- For example -->
DEFAULT_CONTEXT_ROOT=dliteweb
ALL_CONTEXT_ROOTS=
<dliteweb>
dliteweb
4. In the 
 application 
 CtwebResource.jar
 folder (e.g. ‘D:\Canvas\ JBoss EAP 7.x Installed folder\CTWeb\CTWebResources
, in the ....\CtwebResources\src\main\resource\
exportconfig
Ctwebexportconfig.properties
’)
 file, specify the context 
 root as the context 
 path
 in exportconfig.properties file
, 
 as 
as shown in the following code snippet:
 Code Block
languagexml
SESSION_TIMEOUT_URL=/
<dliteweb>
<CONTEXT_ROOT>/index.jsp 
CONTEXT_PATH=/<CONTEXT_ROOT>

/<dliteweb>For JNDI data sources, the data source name should be specified. Let's assume that the JNDI data source name is DliteCTDS.
In the application Resource.jar folder (e.g. ‘D:\Canvas\ JBoss EAP 7.x Installed folder\CTWeb\CTWebResources\
<!-- For example -->
SESSION_TIMEOUT_URL=dliteweb/index.jsp 
CONTEXT_PATH=dliteweb
JNDI Data source name change
1. In the CtwebResource.jar, in the ....\CtwebResources\src\main\resource\
databaseconfig
Ctwebdatabaseconfig.properties 
’)
file, specify the JNDI data source name
 in databaseconfig.properties file
, 
 as 
as shown in the following code snippet:
 Code Block
languagexml
CT_FW_DATASOURCE=java:/<DATA_SOURCE_NAME>
CT_FW_FILEIMPORT_DATASOURCE=java:/
<DliteCTDS>
<DATA_SOURCE_NAME>
<!-- For example -->
CT_FW_DATASOURCE=java:/DliteCTDS 
CT_FW_FILEIMPORT_DATASOURCE=java:/
<DliteCTDS>
DliteCTDS
2. In 
 the JBoss EAP 7.x Installed folder (e.g. 'D:\Canvas\JBoss EAP 7.x Installed folder\standalone\configuration\standalone.xml’)
the application WAR, in the JBoss folder, specify the JNDI data source name in the ..../standalone/configuration/standalone.xml file, as shown in the following code snippet:
 Code Block
languagexml
<datasource jndi-name="java:jboss/datasources/
<DliteCTDS>
<DATA_SOURCE_NAME>" pool-name="
<DliteCTDS>
<DATA_SOURCE_NAME>" enabled="true">

      

     <connection-url>jdbc:oracle:thin:@10.12.25.28:1521:SIR13714</connection-url>



     
      
<driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
     <driver>OracleJDBCDriver</driver>
     <security>
      
<driver>OracleJDBCDriver</driver>
   <user-name><SCHEMA_NAME></user-name>
         <password><SCHEMA_NAME_PWD></password>
     </security>

 <security>
    
</datasource>
<!-- For example -->
<datasource jndi-name="java:jboss/datasources/DliteCTDS" pool-name="DliteCTDS" enabled="true">
     <connection-url>jdbc:oracle:thin:@10.12.25.28:1521:SIR13714</connection-url>
     
<user-name><SCHEMA_NAME></user-name>

<driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
     <driver>OracleJDBCDriver</driver>
     <security>
         
<password><SCHEMA_NAME_PWD></password>
<user-name>CT_MIG</user-name>
         <password>CT_MIG</password>
     </security>
</datasource>
 Note
titleNote
Steps 6 and 7 are applicable only for the JBoss application server. If you use Tomcat or any other app server, proceed to step 8. 
In the JBoss EAP 7.x Installed folder (e.g. 'D:\Canvas\JBoss EAP 7.x Installed folder\standalone\deployments\ctmodelhouse.war \WEB-INF\jboss-web.xml’)
3. In the application WAR, in the JBoss folder, specify the JNDI data source name in the \WEB-INF\jboss-web.xml file, as shown in the following code snippet:
 Code Block
languagexml
<resource-ref>
   <res-ref-name>jdbc/CTwebCanvasDataSource</res-ref-name>
   <jndi-name>java:jboss/datasources/<DATA_SOURCE_NAME></jndi-name>
</resource-ref>
<!-- For example -->
<resource-ref>
   <res-ref-name>jdbc/CTwebCanvasDataSource</res-ref-name>

 

   
       
<jndi-name>java:jboss/datasources/
<DliteCTDS><
DliteCTDS</jndi-name>
</resource-ref>
It is essential to specify the work folder path. Let's assume that the work folder path is D:/Canvas19/dliteweb. 
In the application Resource.jar folder (e.g. ‘D:\Canvas\ JBoss EAP 7.x Installed folder\CTWeb\CTWebResources
Work Folder Changes
1. In the CtwebResource.jar, in the ....\CtwebResources\src\main\resource\
MyImplementation
CtwebImplementation.properties
’)
 file, specify the work folder and centralized work folder paths
 in MyImplementation.properties file
, as shown in the following code snippet:
 Code Block
languagexml
CT_WORK_FOLDER_PATH=<WORK_FOLDER>                
CT_WORK_CENTRALIZED_FOLDER_PATH=<WORK_FOLDER>   
<!-- For example -->
CT_WORK_FOLDER_PATH=D:/Canvas19/dliteweb                
CT_WORK_CENTRALIZED_FOLDER_PATH=D:/Canvas19/dliteweb
   It is essential to specify the WAR file name. Let's assume that the WAR file name is dliteweb. 
2. Specify the Web Application Resource (WAR) file name 
 in 
of the application in build.xml file, as shown in the following code snippet: 
 Code Block
languagexml
<property name="WAR_FILE_NAME" value="${DIST_ROOT}/<WAR_NAME>.war" />
<!-- For example -->
<property name="dliteweb" value="${DIST_ROOT}/
<dliteweb>
dliteweb.war" />


 Expand
titleConnection timeout issue while deploying application on JBOSS
Solution: Add following entry in the standalone.xml file:
 Code Block
languagexml
linenumberstrue
<system-properties>
         <property name="jboss.as.management.blocking.timeout" value="600"/> 
  </system-properties>


 Expand
titleApplication deployment fails when setting up in a new environment
Check for the following pattern in the error logs:
 Code Block
linenumberstrue
java.lang.ExceptionInInitializerError
at java.lang.J9VMInternals.ensureError(J9VMInternals.java:148)
at java.lang.J9VMInternals.recordInitializationFailure(J9VMInternals.java:137)
at io.bit3.jsass.Compiler.<init>(Compiler.java:40)
at com.intellectdesign.canvas.web.themes.ThemeConfig$CssConfig.convertScssFileToCssFie(ThemeConfig.java:817)
Solution: The SASS Java library does not support AIX operating system and hence the issue. This issue can be solved by performing the SASS compilation while generating the application WAR. Go through the following links to find samples of the ANT targets that must be included in the build file to perform the SASS compilation:

 Expand
titleGetting Heap Space or Out of Memory error
Check for the following pattern in the error logs: 
 Code Block
linenumberstrue
java.lang.OutOfMemoryError: Java heap space
Solution: Increase the memory to at least 8 GB. If the OutOfMemoryError still occurs, generate periodic heap dumps and analyse whether the heap usage is increasing.

 Expand
titleApplication is not getting deployed
Check for the following pattern in the error logs:
 Code Block
linenumberstrue
SEVERE: [com.intellectdesign.canvas.config.ConfigurationManager] [CTCOM00095] : Error while initializing configuration
Solution: This pattern will be present in the CanvasConfig_<yyyyMMddkkmmss>_<appServerName>_<applicationName> in case there is an error while initializing the configuration required for CT. At the end of the stack trace check the root cause mentioned in the “Caused by: " section.

 Expand
titleInstead of updating the CanvasApplicationContext.json file, update web.xml in the 19.1.7.11 19679 revision and above.
  • If the latest release revision is 19.1.7.11 19679 and above, refer to the following steps:
Perform the following steps to use the CT release as-is without the need to update the CanvasApplicationContext.json file in the CTResources.jar.
  1. Update web.xml in the application WAR.
Example, File Location: ...\webapps\ctmodelhouse\WEB-INF\web.xml
The following snippet provides the sample values of the necessary elements and attributes that are to be configured within web.xml.
 Code Block
<context-param>
<param-name>appId</param-name>
<param-value>MODELHOUSE</param-value>
</context-param>

 Note
The param name should remain unchanged. Only "appId" should be used.
If the context-param attribute is already present in the web.xml for a different param-name, the new context-param attribute has to be added after that to configure the value of appId.
Refer to the following snippet for sample values of the necessary elements and attributes that are to be configured within web.xml.
 Code Block
<context-param>
<param-name>ModelHouseInitializeBundle</param-name>
<param-value>MyImplementation</param-value>
</context-param>
<context-param>
<param-name>appId</param-name>
<param-value>MODELHOUSE</param-value>
</context-param>