Edit D:\app\Administrator\product\11.2.0\dbhome_1\LIB\java\shared\org.jgroups\LATEST\udp.xml

<config>
    <UDP
         mcast_addr="${jgroups.udp.mcast_addr:228.10.10.10}"
         mcast_port="${jgroups.udp.mcast_port:45588}"
         tos="8"
         ucast_recv_buf_size="20000000"
         ucast_send_buf_size="640000"
         mcast_recv_buf_size="25000000"
         mcast_send_buf_size="640000"
         loopback="false"
         discard_incompatible_packets="true"
         max_bundle_size="64000"
         max_bundle_timeout="30"
         use_incoming_packet_handler="true"
         ip_ttl="${jgroups.udp.ip_ttl:2}"
         enable_bundling="true"
         enable_diagnostics="true"
         thread_naming_pattern="cl"

use_concurrent_stack="true"

thread_pool.enabled="true"
         thread_pool.min_threads="2"
         thread_pool.max_threads="8"
         thread_pool.keep_alive_time="5000"
         thread_pool.queue_enabled="true"
         thread_pool.queue_max_size="1000"
         thread_pool.rejection_policy="Run"

oob_thread_pool.enabled="true"
         oob_thread_pool.min_threads="1"
         oob_thread_pool.max_threads="8"
         oob_thread_pool.keep_alive_time="5000"
         oob_thread_pool.queue_enabled="false"
         oob_thread_pool.queue_max_size="100"
         oob_thread_pool.rejection_policy="Run"/>

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