We are trying to connect to oracle database server and seeing this error as below when trying to do perform JDBC query.
Oracle version is exadata 220.127.116.11
failed due to Could not get JDBC Connection Could not get JDBC Connection nested exception is java sql SQLException An SQLException was provoked by the following failure java lang InterruptedException java lang InterruptedException
Release : 9.4
Component : API GATEWAY
From Data Collector tool, DCT files reviewed :
netstat-tnap.txt shows :
SYN_SENT , means a problem (firewall,something blocking that connection):
tcp 0 1 172.19.113.223:14121 172.19.27.130:1522 SYN_SENT 3658/java
ssg.2020-08-20.log shows :
2020-08-20T09:41:47.683-0500 WARNING 85 com.l7tech.server.cluster.DatabaseReplicationMonitor: 2380: Error accessing host/database localhost/ssg:
Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
confirmed a Network Issue , Server 172.19.27.130:1522 blocked by firewall