IM002][unixODBC][Driver Manager]Data source name not found, and no default driver specified [ISQL]ERROR: Could not SQLConnect

If  trying isql from server gives the following error,

IM002][unixODBC][Driver Manager]Data source name not found, and no default driver specified
[ISQL]ERROR: Could not SQLConnect


Then check the results of following commands in servers

odbcinst -q -s

odbcinst -q -d

if you find any error means that the server is unable to read both odbc.ini and odbcinst.ini files. To resolve this configure the environment variable of server as 

export ODBCSYSINI=/etc/

export ODBCINI=/etc/odbc.ini

this should fix the error.

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