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

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:690]  
FATAL ERROR in native method: JDWP No transports initialized, jvmtiError=AGENT_ERROR_TRANSPORT_INIT(197)  

　linux下tomcat shutdown.sh 时报错,之前在设置idea远程调试时,在catlina.sh中添加了如下export JAVA_OPTS='-agentlib:jdwp=transport=dt_socket,address=9999,suspend=n,server=y',改成export CATALINA_OPTS='-agentlib:jdwp=transport=dt_socket,address=9999,suspend=n,server=y'就不报错了.