CC 0100 and "JVMJZBL2008E Could not find or load class" after Datacom System REST API version fallback

Products

• Datacom
• Datacom/DB

Issue/Introduction

After a fall back from version 2.0.04-211 to version 2.0.03-201, Datacom USS System REST API server cannot be initialized, since it gets a Condition Code 0100 at startup. 

The following messages can be found on server SYSOUT:

JVMJZBL1023N Invoking org.springframework.boot.loader.PropertiesLauncher.main()...                 
JVMJZBL1056I Arguments to main...                                                                  
JVMJZBL1057I --spring.config.additional-location=file:config/application_datacom.yml               
JVMJZBL2999T -> JniUtil.convert()                                                                  
JVMJZBL2999T <- JniUtil.convert()                                                                  
JVMJZBL2008E Could not find or load class: org.springframework.boot.loader.PropertiesLauncher      
JVMJZBL2999T -> JniUtil.writeStackTrace()                                                          
JVMJZBL2007E Stack trace follows:                                                                  
java.lang.NoClassDefFoundError: org.springframework.boot.loader.PropertiesLauncher                 
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.loader.PropertiesLauncher    
.at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:766)        
.at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)     
.at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:1073)                               
JVMJZBL2999T <- JniUtil.writeStackTrace()                                                          
JVMJZBL2999T <- invokeMain()                                                                       
JVMJZBL2999T <- run()                                                                              
JVMJZBL2999T -> cleanup()                                                                          
JVMJZBL1014I Waiting for non-daemon Java threads to finish before exiting...                       
JVMJZBL2999T JvmExitHook entered with exitCode=0, javaMainReturnedOrThrewException=0               
JVMJZBL1042E JZOS batch launcher failed, return code=100                                           
JVMJZBL2999T DestroyJavaVM elapsed time=0.004415 seconds, cpu time=0.000771 seconds                
JVMJZBL2999I JZOS batch launcher elapsed time=0 seconds, cpu time=0.240000 seconds (zOS release 29)
JVMJZBL1047W JZOS batch launcher completed with Java exception, return code=100     

Environment

Datacom System REST API on USS

Cause

The values of REST_VERSION and DBAPI_VERSION parameters are not correctly set.

Resolution

The values REST_VERSION and DBAPI_VERSION parameters in the Server JCL must be set back to the currently used versions.

Change:
export REST_VERSION=2.0.04-211 
export DBAPI_VERSION=1.0.4-0022
to:
export REST_VERSION=2.0.03-201 
export DBAPI_VERSION=1.0.4-0021