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Oracle Database Error Solutions & DBA Knowledge Base

Practical, step-by-step Oracle Database troubleshooting and administration resources for DBAs, developers, Oracle E-Business Suite administrators, and IT professionals.

Explore practical guidance covering Oracle Database errors, RMAN backup and recovery, Data Guard, ASM, RAC, performance tuning, installation, patching, cloning, Oracle Linux administration, and Oracle E-Business Suite.

Our troubleshooting guides explain common causes, diagnostic steps, SQL queries, configuration checks, and recommended solutions to help database professionals understand problems and resolve them systematically.

Start with the Oracle Error Codes Guide or explore the main DBA topic areas to find detailed technical articles and practical administration resources.

Requested URL /OA_HTML/AppsLogin Was Not Found on This Server – Complete Oracle E-Business Suite R12 Troubleshooting Guide

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Requested URL /OA_HTML/AppsLogin Was Not Found on This Server – Complete Oracle E-Business Suite R12 Troubleshooting Guide One of the most frustrating errors encountered by Oracle E-Business Suite (EBS) Application DBAs is the message: Requested URL /OA_HTML/AppsLogin was not found on this server. This error usually appears immediately after opening the Oracle E-Business Suite login URL. Instead of displaying the login page, Oracle HTTP Server (OHS) returns an HTTP 404 error indicating that the requested resource cannot be located. Although many administrators assume that the OA_HTML directory has been deleted, the problem is usually caused by an application tier configuration issue rather than missing application files. Incorrect context file values, Oracle HTTP Server configuration problems, AutoConfig inconsistencies, incomplete cloning activities, WebLogic Server failures, or an invalid login URL are among the most common causes. Oracle E-Business Suite R12.2 ...

APP-FND-01630 / APP-FND-01662: Cannot Open FNDCPASS Log File in Oracle E-Business Suite R12 – Complete Troubleshooting Guide

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APP-FND-01630 / APP-FND-01662: Cannot Open FNDCPASS Log File in Oracle E-Business Suite R12 – Complete Troubleshooting Guide The errors APP-FND-01630 and APP-FND-01662 are commonly encountered while running the FNDCPASS utility in Oracle E-Business Suite. These errors usually occur when FNDCPASS is unable to create, access, or write its log file. Although administrators often assume there is a problem with the FNDCPASS utility itself, these errors almost always indicate an issue with the Oracle E-Business Suite application environment, filesystem permissions, missing directories, incorrect environment variables, insufficient disk space, or an invalid log file location. Since FNDCPASS is used to change critical Oracle E-Business Suite passwords—including the APPS schema password, application user passwords, and Oracle Applications product schema passwords—it is essential that the utility runs successfully. Failure to generate its log file normally causes the password ch...