How to reslove when agent has blocked

Follow the below steps as agent blocked.

1. ./emctl stop agent
2. ./emctl listplugins agent -type all
3. export ORACLE_HOME=/u9000/app/oracle/product/agent12c/core/12.1.0.2.0
 /u9000/app/oracle/product/agent12c/core/12.1.0.2.0/perl/bin/perl /u9000/app/oracle/product/agent12c/core/12.1.0.2.0/bin/AgentPluginDeploy.pl -oracleHome /u9000/app/oracle/product/agent12c/core/12.1.0.2.0 -agentDir /u9000/app/oracle/product/agent12c -pluginIdsInfoFile /u9000/app/oracle/product/agent12c/plugins.txt -action configure -emStateDir /u9000/app/oracle/product/agent12c/agent_inst
4. ./emctl listplugins agent -type all
5. ./emctl update_inventory plugin
6. ./emctl start agent
7. Unblock the agent
8. Rsync from console.(Wait for 30 mins)
9. ./emctl secure agent.(Agnet registration passworsd is same as sysman)