Error message while installing Agent OEM 12c :
Error Message: PROV-16011: Algorithm negotiation fail INFO:Updating Action SSHValidationswith Status FAILED and error Message :Connection to the SSH daemon (sshd) on the target host failed with the following error : Algorithm negotiation fail and problem SSH connection check failed and recommendation Ensure that SSH daemon (sshd) on the target host is able to respond to login requests.
Solution : Add these lines in /etc/ssh/sshd_config
# Default Encryption algorithms and Message Authentication codes
KexAlgorithms diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc,blowfish-cbc
MACS hmac-md5,hmac-sha1,hmac-sha1-96,hmac-md5-96
Restart ssh : #svcadm refresh ssh

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