Jagent unable to start PMSRVR , Stop all polling tasks. Wait for 9 second(s) and retry again. Due to Connection refused

Unable to start PMSRVR in golden gate 19.1.0.0.4

Got below error;
Fail to get Web Service Port, java.lang.Exception: PM Server is down

[2021-12-06T23:48:36.361-08:00] [JAGENT] [ERROR] [OGGMON-20348] [com.goldengate.monitor.jagent.jmx.ManagerConnectionKeeperThread] [tid: ManagerConnectionKeeper] [ecid: 0000NqJr8243z0GayxaeMG1Xfl69000001,0] Failed to establish a connection to the OGG Core Web Services-Host:HOSTIP Port:9,004. Stop all polling tasks. Wait for 9 second(s) and retry again. Due to Connection refused (Connection refused)

Cause:

There are multiple GoldenGate installations on the same host.

Solution:

cd $OGG_HOME/dirprm

ls -ltr pmsrvr-config.dat

Backup pmsrvr-config.dat, then change port <Port> to a port available.

Check file detais:

/u01/gg/dirprm> head pmsrvr-config.dat

{"config":{"network":{"serviceListeningPort":9004,"ipACL":[{"permission":"allow","address":"ANY"}]},"legacyProtocolEnabled":false,"asynchronousOperationEnabled":true,"defaultSynchronousWait":30,"workerThreadCount":5,"taskManagerEnabled":true,"csrfTokenProtectionEnabled":true,"csrfHeaderProtectionEnabled":false,"authorizationEnabled":false,"authorizationDetails":{"sessionDurationSecs":3600,"useMovingExpirationWindow":false,"movingExpirationWindowSecs":900,"common":{"allow":["Digest","x-Cert"],"customAuthorizationEnabled":true}},"security":false,"securityDetails":{"network":{"common":{"id":"OracleSSL","fipsEnabled":false,"fipsModulePath":"<not-set>"},"inbound":{"role":"server","authMode":"clientOptional_server","wrl":"file:./etc/ssl/server","wrlPassword":"","protocolVersion":"1_2","cipherSuites":"^((?!anon|RC4|NULL|3DES).)*$","crlEnabled":false,"crlStore":"file:./etc/ssl/crls.pem","certACL":[{"permission":"allow","name":"ANY"}],"sessionCachingEnabled":true,"sessionCacheDetails":{"limit":20480,"timeoutSecs":1800}},"outbound":{"role":"client","authMode":"client_server","wrl":"file:./etc/ssl/client","wrlPassword":"","protocolVersion":"1_2_Or_1_1_Or_1_0_Or_3_0","cipherSuites":"^.*$","crlEnabled":false,"crlStore":"file:./etc/ssl/crls.pem","certACL":[{"permission":"allow","name":"ANY"}],"sessionCachingEnabled":false}}},"hstsEnabled":true,"hstsDetails":"max-age=31536000;includeSubDomains","contentUrlRewrite":[{"srcUrl":"/index.html","targetUrl":"/services/v2/content/index.html"},{"srcUrl":"/$","targetUrl":"/services/v2/content/index.html"},{"srcUrl":"/content$","targetUrl":"/services/v2/content/index.html"},{"srcUrl":"/content/$","targetUrl":"/services/v2/content/index.html"},{"srcUrl":"/content/","targetUrl":"/services/v2/content/"},{"srcUrl":"/services/v2/content$","targetUrl":"/services/v2/content/index.html"},{"srcUrl":"/services/v2/content/$","targetUrl":"/services/v2/content/index.html"},{"srcUrl":"/css$","targetUrl":"/services/v2/content/css/"},{"srcUrl":"/css/$","targetUrl":"/services/v2/content/css/"},{"srcUrl":"/css/","targetUrl":"/services/v2/content/css/"},{"srcUrl":"/js$","targetUrl":"/services/v2/content/js/"},{"srcUrl":"/js/$","targetUrl":"/services/v2/content/js/"},{"srcUrl":"/js/","targetUrl":"/services/v2/content/js/"},{"srcUrl":"/favicon.ico$","targetUrl":"/services/v2/content/css/images/favicon.ico"}],"loadExtractHandler":true,"loadReplicatHandler":true,"loadDSHandler":true,"UDPReceiveBufferSize":10485760,"CollectorWaitInitTime":100,"CollectorWaitIncrement":100,"CollectorWaitMax":1500,"CollectorThreadStack":1048576,"CollectorWorkerThreads":5,"CollectorWorkerQueueLimit":10000,"MonitorTaskHBTimeout":10000,"MonitorTaskFrequency":1000,"DataStoreMemoryModel":"PrivateMemory","DataStoreSharedKey":0,"DataStoreType":"BDB","DataStoreMaxAge":0,"DataStoreMaxDBs":5000,"RepoDatastorePath":"","MessageLimit":500,"StatusChangeLimit":500}}[oracle@prodhost] 

/u01/gg/dirprm> vi pmsrvr-config.dat

Modify port from 9004 to 5504

Started jagent, jagent able to start PMSRVR process without any issue after changing port 

GGSCI> info all

Program     Status      Group       Lag at Chkpt  Time Since Chkpt

MANAGER     RUNNING                                           

JAGENT      RUNNING                                           

PMSRVR      RUNNING