java - Cannot establish a connection to jdbc:oracle:thin:@localhost:1521:XE - Stack Overflow
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Setting Up a Connection Manually - DbVisualizer 12.1 Users Guide - DbVisualizer Users Guide
java.sql.SQLRecoverableException: IO 오류: The Network Adapter could not establish the connection : 네이버 블로그
Can't see logs in Integration service. JDBC connection issue - webMethods - Software AG Tech Community & Forums
Cannot establish a connection to remote DB · Issue #719 · microsoft/mssql- jdbc · GitHub
Why can't I establish a connection to the local oracle database from within the pre-built oracle virtual machine? - Database Administrators Stack Exchange