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The FND_OAM_DS_ALGOS_B table in Oracle E-Business Suite (EBS) versions 12.1.1 and 12.2.2 is a critical repository for storing metadata related to diagnostic and monitoring algorithms used by Oracle Application Manager (OAM). This table is part of the Oracle Diagnostics Framework (ODF), which provides tools for diagnosing and resolving issues within the EBS environment. Below is a detailed analysis of its structure, purpose, and functional significance.

1. Table Overview

The FND_OAM_DS_ALGOS_B table stores definitions of diagnostic algorithms that are executed during system health checks, performance monitoring, and troubleshooting. These algorithms are rule-based and are invoked by OAM to detect anomalies, performance bottlenecks, or configuration issues. The table is foundational to Oracle's self-service diagnostics capabilities, enabling administrators to proactively identify and address problems.

2. Key Columns and Structure

The table consists of several important columns, including:

  • ALGO_ID: A unique identifier for each diagnostic algorithm.
  • ALGO_NAME: The name of the algorithm (e.g., "Concurrent Processing Health Check").
  • ALGO_DESCRIPTION: A detailed description of the algorithm's purpose.
  • ALGO_TYPE: Categorizes the algorithm (e.g., "Performance," "Configuration," "Error Detection").
  • ALGO_CLASS: The Java class or PL/SQL procedure implementing the logic.
  • ENABLED_FLAG: Indicates whether the algorithm is active (Y/N).
  • CREATION_DATE, LAST_UPDATE_DATE: Audit columns tracking record changes.

The table is typically joined with FND_OAM_DS_ALGOS_TL for translated descriptions and FND_OAM_DS_CHECKS_B to associate algorithms with specific diagnostic checks.

3. Functional Role in Oracle EBS

The FND_OAM_DS_ALGOS_B table supports the following functionalities:

  • Automated Diagnostics: Algorithms are executed during scheduled health checks or on-demand scans to detect issues like invalid profile options, expired passwords, or resource contention.
  • Custom Rule Extensions Customers can add custom algorithms by inserting records into this table, extending Oracle's out-of-the-box diagnostics.
  • Integration with OAM: The Oracle Applications Manager (OAM) uses this table to populate the "Diagnostics" dashboard, where administrators can run checks and view results.

4. Technical Considerations

In EBS 12.2.2, the table is part of the Online Patching (ADOP) framework, meaning changes to algorithms are synchronized across patch editions. Direct DML operations on this table are discouraged; instead, APIs like FND_OAM_DIAGNOSTICS_PKG should be used to ensure metadata consistency.

5. Example Use Case

A common scenario involves an algorithm detecting "Workflow Mailer Status." The ALGO_CLASS might point to a PL/SQL procedure that queries WF_NOTIFICATION_OUT for stuck notifications. If issues are found, OAM flags them in the diagnostics console with remediation steps.

6. Conclusion

The FND_OAM_DS_ALGOS_B table is a cornerstone of Oracle EBS's diagnostic infrastructure, enabling automated, rule-based problem detection. Its metadata-driven design allows flexibility for both Oracle-provided and custom checks, making it indispensable for system administrators managing EBS 12.1.1 or 12.2.2 environments.