...
Then you need to replace the original library (/usr/lib64/libodbc.so.2.0.0) with the new one and also replace the symbolic link /usr/lib64/libodbc.so.2.
When working with TCP connections, we recommend changing the value of the net.ipv4.tcp_syn_retries parameter from the default 6 to 3. This will cause a faster timeout when establishing a connection (the value 6 corresponds to up to 130 seconds, and the value 3 corresponds to 16 seconds).
This parameter can be set at runtime with the command
sysctl net.ipv4.tcp_syn_retries=3
or at the start - e.g. by creating a /etc/sysctl.d/80-d2000.conf file with the contents
# Ipesoft D2000 communication setting
# decrease tcp_syn_retries from default (6) to 3 to enable faster reconnect of redundant communications
net.ipv4.tcp_syn_retries = 3