{"id":1796,"date":"2025-01-12T21:21:17","date_gmt":"2025-01-12T21:21:17","guid":{"rendered":"https:\/\/w3buddy.com\/?p=1796"},"modified":"2026-01-15T13:19:16","modified_gmt":"2026-01-15T07:49:16","slug":"how-to-fix-ora-01017-invalid-username-password-logon-denied","status":"publish","type":"post","link":"https:\/\/w3buddy.com\/blog\/how-to-fix-ora-01017-invalid-username-password-logon-denied\/","title":{"rendered":"How to Fix ORA-01017: invalid username\/password; logon denied"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">When you&#8217;re working with Oracle Recovery Manager (RMAN) and encounter the error:<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-sql\">ORA-01017: invalid username\/password; logon denied<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">you may immediately assume that it&#8217;s an issue with the username or password. While this is often the case, there&#8217;s also a possibility that the problem lies elsewhere, specifically with your connection string or TNS entry.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s walk through what this error means and how to fix it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Understanding the Error<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>ORA-01017<\/strong> error generally occurs when RMAN (or Oracle) cannot authenticate the provided credentials. It might seem like a simple case of entering the wrong password or username, but sometimes the issue is more complex.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the example message above, RMAN encounters the error after failing to connect to the target database:<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-sql\">RMAN-00554: initialization of internal recovery manager package failed\nRMAN-04005: error from target database:\nORA-01017: invalid username\/password; logon denied<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">The key takeaway here is that the issue might not always be about incorrect credentials.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The Real Culprit: Connection String<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In some instances, the error is caused by an incorrect connection string or TNS entry. The credentials might be correct, but if the connection string isn\u2019t properly configured, Oracle won\u2019t be able to establish the connection, leading to an &#8220;invalid username\/password&#8221; error.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, this connection string might fail:<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\">rman target sys\/somepassword@\"(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac01.testserver.com)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TESTDB)))\"<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">The Fix: Add INSTANCE_NAME<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sometimes, the issue can be solved by simply modifying the connection string. If you include the <code>INSTANCE_NAME<\/code> parameter, Oracle may be able to resolve the connection properly. Here\u2019s an updated connection string:<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-bash\">rman target sys\/somepassword@\"(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rac01.testserver.com)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=TESTDB)(INSTANCE_NAME=TESTDB1)))\"<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Notice the addition of the <code>INSTANCE_NAME<\/code> parameter within the <code>CONNECT_DATA<\/code> section. This small change can make a big difference in fixing the issue.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Conclusion<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">While the <strong>ORA-01017<\/strong> error usually points to issues with credentials, always consider verifying the connection string or TNS entry. Modifying the connection string to include the <strong>INSTANCE_NAME<\/strong> might be all you need to resolve the issue and successfully connect to your Oracle database using RMAN.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When you&#8217;re working with Oracle Recovery Manager (RMAN) and encounter the error: you may immediately assume that it&#8217;s an issue with the username or password. While this is often the case, there&#8217;s also a possibility that the problem lies elsewhere, specifically with your connection string or TNS entry. Let\u2019s walk through what this error means [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowu461DA:productID":"","footnotes":""},"categories":[1225],"tags":[],"class_list":["post-1796","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/posts\/1796","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/comments?post=1796"}],"version-history":[{"count":1,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/posts\/1796\/revisions"}],"predecessor-version":[{"id":1797,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/posts\/1796\/revisions\/1797"}],"wp:attachment":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/media?parent=1796"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/categories?post=1796"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/tags?post=1796"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}