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TNS-12560

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TNS-12560: TNS:protocol adapter error TNS-00584: Valid node checking configuration error
when startup listener
TNS-12560: TNS:protocol adapter error
TNS-00584: Valid node checking configuration error
SOLUTION:
remove below parameter in sqlnet.ora
cd $ORACLE_HOME/network/admin
tcp.validnode_checking = yes
tcp.invited_nodes=(hostname.domain, hostname.domain)

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