Weblogic startup error: ERROR: transport error 202: bind failed: Address already in use

Symptoms: 
You try to start up the managed-server on Weblogic, but gets error such as this:

ERROR: transport error 202: bind failed: Address already in use
ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510)
JDWP exit error AGENT_ERROR_TRANSPORT_INIT(197): No transports initialized [../../../src/share/back/debugInit.c:750]
FATAL ERROR in native method: JDWP No transports initialized, jvmtiError=AGENT_ERROR_TRANSPORT_INIT(197)
/u01/ofm/10.3.6-RSB/WLS/user_projects/domains/RSB/bin/startWebLogic.sh: line 180: 11471 Aborted                 (core dumped) ${JAVA_HOME}/bin/java ${JAVA_VM} ${MEM_ARGS} -Dweblogic.Name=${SERVER_NAME} -Djava.security.policy=${WL_HOME}/server/lib/weblogic.policy ${JAVA_OPTIONS} ${PROXY_SETTINGS} ${SERVER_CLASS}
<Sep 18, 2019 6:05:36 PM> <FINEST> <NodeManager> <Waiting for the process to die: 11418>
<Sep 18, 2019 6:05:36 PM> <INFO> <NodeManager> <Server failed during startup so will not be restarted>
<Sep 18, 2019 6:05:36 PM> <FINEST> <NodeManager> <runMonitor returned, setting finished=true and notifying waiters>


Cause: 
The main part of the error message is this: Address already in use.
And the explanation is that you might have multiple managed server's configured in a single domain running on same debug port, it gives the below error while starting a managed server


Solution:
1) Disable the debugFlag in setDomainEnv.sh file

Take backup of  <DOMAIN_HOME>/<DOMAIN_NAME>/bin/setDomainEnv.sh
Modify the debugFlag="true" to debugFlag="false" in setDomainEnv.sh

This will disable the debug and will solve the issue.
But if you want to keep enabled the debug option, so you have to change the debug port as given below:

2) Give different debug port for all the managed servers

Take backup of  <DOMAIN_HOME>/<DOMAIN_NAME>/bin/setDomainEnv.sh
Add the below lines for all the managed server in setDomainEnv.sh

if [ "${SERVER_NAME}" = "soa_server1" ] ; then
   DEBUG_PORT="7453"
   export DEBUG_PORT
   
 if [ "${SERVER_NAME}" = "osb_server1" ] ; then
   DEBUG_PORT="7454"
   export DEBUG_PORT

Here it will take different value of debug ports while starting, hence will not give the address already in use error.
After that bounce the Weblogic.