OEM agent was blocked with the following messages in agent log:

...
..
.

2023-12-05 20:16:59,448 [158:905DEBE9] INFO - The agent has been blocked by the OMS.     

2023-12-05 20:16:59,448 [158:905DEBE9] INFO - Reason the OMS blocked the agent: Resync
...
..
.

SOLUTION

1. Perform agent resynchronization from OEM console.
   
   AND / OR
   
2. Modify bounceCtr value in agntstmp.txt file to one less than repository value and save it.

Get Bounce_CTR value from repository database as SYSMAN:



SQL>select BOUNCE_CTR from MGMT_EMD_PING where TARGET_GUID=(select target_guid from mgmt_targets where target_name ='<agent_home>:<port>');

BOUNCE_CTR

29



For a health agent, bounceCtr value in agntstmp.txt file must be at 119.

$emctl stop agent



2. Take backup of file and edit agntstmp.txt from <AGENT_HOME>/agent_inst/sysman/emd/





From

bounceCtr=88

To

bounceCtr=28



3. Save file and start agent



$emctl start agent