Search Results ahl_unit_deferrals_pkg




Overview
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Overview

The APPS.AHL_UNIT_DEFERRALS_PKG package body is a supporting database API within the Oracle Enterprise Asset Management (eAM) / Asset Lifecycle Management (AHL) product family in Oracle E-Business Suite 12.1.1 and 12.2.2. Its business purpose is to manage the persistence and multilingual presentation of unit deferral records — entries that record the postponement or deferral of maintenance activity against a maintenance unit. Deferrals allow an organization to document that a scheduled maintenance requirement has been intentionally postponed, capturing the associated reason and authorization, so that compliance and maintenance planning reports reflect the true state of the asset.

The package exposes a standard EBS "translated entity" table-handler pattern, wrapping the deferral base table and its translation table so that both the tactical DML operations and the multilingual display values are handled consistently. It is classified by ETRM as an OTHER API, meaning it is a low-level table handler rather than a business-flow API published for external integration. The body is documented as VALID in the APPS schema and depends on AHL_UNIT_DEFERRALS_B, its _S sequence, the relation package AHL_UNIT_DEFERRALS_PKG (spec), AHL_UNIT_DEFERRALS_TL, FND_LANGUAGES, FND_MESSAGE, and APP_EXCEPTION.

Key Procedures and Functions

ETRM documents five procedures or functions in the package. Their roles are as follows:

  • INSERT_ROW — Creates a new unit deferral record. It inserts the base (non-translatable) attributes into AHL_UNIT_DEFERRALS_B, generating the primary key from the AHL_UNIT_DEFERRALS_B_S sequence, and populates the corresponding language row in AHL_UNIT_DEFERRALS_TL for the session language.
  • LOCK_ROW — Issues a SELECT ... FOR UPDATE against the deferral base row to serialize concurrent modification, protecting the record from lost updates while a calling form or program processes it.
  • UPDATE_ROW — Modifies an existing deferral. It updates the base table columns and the translatable (TL) columns for the current language, typically after LOCK_ROW has been invoked.
  • DELETE_ROW — Removes a deferral, deleting both the base row and its translation rows to preserve referential integrity.
  • ADD_LANGUAGE — Inserts a translation row into AHL_UNIT_DEFERRALS_TL for a language that does not yet have one, using FND_LANGUAGES to validate or resolve the language code and FND_MESSAGE to report errors. This supports the multilingual (MLS) requirement of the deferral description fields.

Tables Accessed

  • AHL_UNIT_DEFERRALS_B — the base table holding language-independent deferral attributes; read and written by INSERT_ROW, UPDATE_ROW, DELETE_ROW, and LOCK_ROW.
  • AHL_UNIT_DEFERRALS_B_S — the sequence supplying the surrogate primary key for new deferral rows during INSERT_ROW.
  • AHL_UNIT_DEFERRALS_TL — the translation table holding language-specific descriptive text; written by INSERT_ROW, UPDATE_ROW, DELETE_ROW, and ADD_LANGUAGE.
  • FND_LANGUAGES — the Oracle Foundation language repository, referenced to resolve or validate installed languages when adding translations.

Usage Notes

Because ETRM documents AHL_UNIT_DEFERRALS_PKG as referenced by four other database objects, it is best understood as an internal dependency invoked indirectly rather than a package that end users call directly. In practice it is driven by the AHL eAM maintenance forms (the unit deferral maintenance windows) and by related AHL packages that create or revise deferrals during maintenance scheduling logic. The typical lifecycle is LOCK_ROW, then UPDATE_ROW or DELETE_ROW within a single form transaction, with INSERT_ROW used when a new deferral is defined. Multilingual sites rely on ADD_LANGUAGE to backfill translation rows when a new language is installed.

Custom code should avoid writing directly to AHL_UNIT_DEFERRALS_B and AHL_UNIT_DEFERRALS_TL; doing so bypasses the sequence handling, row locking, and translation maintenance performed here, and risks orphaned TL rows. Note also that the package is not referenced by any database object per ETRM, so it sits at a low level of the dependency chain — safe to depend on, but its signature is not published as a public integration contract.