Database monitoring stuck Oracle lsnrctl status stuck in connecting......

Client shows "TNS connection timed out"

run lsnrctl status

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxxxxx)(PORT=1521)))

It is found that there are 2 listening processes running

[oracle@fyerp-db01 ~]$ ps -ef | grep tns

root       125     2  0 Mar29 ?        00:00:00 [netns]

oracle   11242     1  0 Apr16 ?        00:02:52 /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr LISTENER -inherit

oracle   17837 11242  0 09:34 ?        00:00:00 /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr LISTENER -inherit

oracle   19316 19184  0 14:56 pts/4    00:00:00 grep tns