https://www.oraclescripts.com/tags/tns/Recent content in TNS on Oracle ScriptsHugo -- gohugo.ioenOracleScripts.comFri, 01 May 2026 00:00:00 +0000https://www.oraclescripts.com/post/oracle-tnsnames-ora-dedicated-connection-example/Fri, 01 May 2026 00:00:00 +0000https://www.oraclescripts.com/post/oracle-tnsnames-ora-dedicated-connection-example/ <h2 id="sample-tnsnamesora-dedicated-server-entry-with-asm">Sample tnsnames.ora Dedicated Server Entry (with ASM)</h2> <h2 id="purpose">Purpose</h2> <p>The <code>tnsnames.ora</code> file is the client-side address book for Oracle Net. Each entry maps a short alias (<code>SCR9</code>) to a full network address — protocol, host, port, and target service. Without a working <code>tnsnames.ora</code> entry, <code>sqlplus</code>, <code>rman</code>, and any application using OCI cannot reach the database.</p> <p>The two entries below — taken straight from the shutdownabort.com DBA Quick Guides (Andrew Barry, 2007–2013, preserved via the Wayback Machine as the anchor source for this post) — are the smallest possible reference: one dedicated-server connection to a database service, and one connection to a non-default listener used by ASM.</p>