SQL> select * from nls_database_parameters;
...
NLS_NCHAR_CHARACTERSET  AL16UTF16
NLS_CHARACTERSET    AL32UTF8
NLS_TERRITORY   AMERICA
NLS_LANGUAGE    AMERICAN

$ export LANG=en_us
$ echo $LANG
en_us
$ echo $NLS_LANG
American_America.UTF8

$ env |grep ORA
ORACLE_HOME=/usr/lib/oracle/19.3/client64
$ set |grep LIB
LD_LIBRARY_PATH=/usr/lib/oracle/19.3/client64/lib
$ echo $PATH
...:/usr/lib/oracle/19.3/client64/bin

$ ./jmeter -n -t ../prueba_select_jdbc.jmx -l /tmp/resultado -e -o /tmp/prueba_jmeter -Jthreads=10 -Jloop=5 -Duser.country=US -Duser.language=en
Creating summariser <summary>
Created the tree successfully using ../prueba_select_jdbc.jmx
Starting standalone test @ Tue Dec 01 19:57:57 CET 2020 (1606849077184)
Waiting for possible Shutdown/StopTestNow/HeapDump/ThreadDump message on port 4445
summary +      3 in 00:00:04 =    0.7/s Avg:    89 Min:    70 Max:   129 Err:     3 (100.00%) Active: 1 Started: 3 Finished: 2
summary +      2 in 00:00:04 =    0.5/s Avg:    83 Min:    82 Max:    84 Err:     2 (100.00%) Active: 0 Started: 5 Finished: 5
summary =      5 in 00:00:08 =    0.6/s Avg:    87 Min:    70 Max:   129 Err:     5 (100.00%)
Tidying up ...    @ Tue Dec 01 19:58:05 CET 2020 (1606849085631)
... end of run

null 0/java.sql.SQLException: Cannot create PoolableConnectionFactory (ORA-00604: error occurred at recursive SQL level 1\nORA-12705: Cannot access NLS data files or invalid environment specified\n)