# I installed ScyllaDB Enterprise 30days Trail on Amazon EC2 instance and now I want to Connect dbvisualizer to our this ScyllaDb to execute query. I install DataStax cassandra jar in Dbvisulaizer but not able to connect

**URL:** <https://forum.scylladb.com/t/i-installed-scylladb-enterprise-30days-trail-on-amazon-ec2-instance-and-now-i-want-to-connect-dbvisualizer-to-our-this-scylladb-to-execute-query-i-install-datastax-cassandra-jar-in-dbvisulaizer-but-not-able-to-connect/1090>\
**Category:** ScyllaDB\
**Created:** [December 8, 2023, 6:58am UTC](https://forum.scylladb.com/t/i-installed-scylladb-enterprise-30days-trail-on-amazon-ec2-instance-and-now-i-want-to-connect-dbvisualizer-to-our-this-scylladb-to-execute-query-i-install-datastax-cassandra-jar-in-dbvisulaizer-but-not-able-to-connect/1090 "2023-12-08T06:58:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![subrato](https://avatars.discourse-cdn.com/v4/letter/s/c4cdca/32.png) [@subrato](https://forum.scylladb.com/u/subrato)\
**Post date:** [December 8, 2023, 6:58am UTC](https://forum.scylladb.com/t/i-installed-scylladb-enterprise-30days-trail-on-amazon-ec2-instance-and-now-i-want-to-connect-dbvisualizer-to-our-this-scylladb-to-execute-query-i-install-datastax-cassandra-jar-in-dbvisulaizer-but-not-able-to-connect/1090/1 "2023-12-08T06:58:06Z")

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I change rpc\_address and local\_address to Publicip of EC2 instance but after restarting getting below error.

```auto
Startup failed: std::system_error (error system:99, posix_listen failed for address 35.173.42.14:9180: Cannot assign requested address

```