Search Results lock_compare_cover

Overview

ARP_LOCK_LINE_COVER is an Oracle Receivables (AR) package body owned by APPS that provides a low-level locking utility for transaction lines stored in the RA_CUSTOMER_TRX_LINES table. Its principal role is to convert an extensive set of column-level parameters into a line record and then acquire a lock on the corresponding transaction line, ensuring that concurrent processes do not modify the same line simultaneously. This "cover" pattern — reading a row into a PL/SQL record and applying a locking read — is a common defensive technique in Oracle EBS that avoids lost updates and enforces serialized access to critical transaction line data during invoice, credit memo, and adjustment processing.

The package is classified as OTHER in the ETRM 12.2.2 metadata, indicating it is not part of the public, supported API surface but is rather an internal utility consumed by other Receivables components. It carries an internal revision header dating to 2005 (ARTCTLLB.pls 120.3), reflecting its long-standing stability within the AR codebase across the 12.1.x and 12.2.x releases.

Key Procedures and Functions

The package exposes a single documented procedure:

• lock_compare_cover — Converts the incoming column parameters into a line record and locks a transaction line. The procedure accepts a comprehensive set of IN parameters representing essentially every significant attribute of a customer transaction line, including identifiers (customer_trx_line_id, customer_trx_id, line_number, line_type, memo_line_id, inventory_item_id), quantity and pricing fields (quantity_credited, quantity_invoiced, quantity_ordered, unit_selling_price, unit_standard_price, extended_amount), accounting rule fields (accounting_rule_id, rule_start_date, accounting_rule_duration, autorule flags), tax fields (vat_tax_id, sales_tax_id, tax_exempt_flag, taxable_flag, tax_rate, tax_exemption_id, tax_precedence, autotax), reference and linkage fields (previous_customer_trx_id, prev_customer_trx_line_id, link_to_cust_trx_line_id, initial_customer_trx_line_id), and descriptive or contextual attributes (description, item_context, interface_line_context, interface_line_attribute1 through attribute5). The procedure populates a line record from these parameters and performs the locking operation against the target line. Internally it may invoke arp_util.debug for diagnostic tracing.

No other procedures or functions are documented in the package metadata; the remaining package body content is not externally exposed.

Tables Accessed

• RA_CUSTOMER_TRX_LINES — The sole documented table referenced via APPS synonyms. This table stores the individual line details of customer transactions (invoices, credit memos, debit memos, and chargebacks). lock_compare_cover uses this table to identify and lock the target line record. The procedure does not appear to insert or update rows directly; its function is to read the line into a record and hold a lock via a SELECT ... FOR UPDATE-style operation so that the caller can safely compare and subsequently modify line data.

Usage Notes

ARP_LOCK_LINE_COVER is an internal utility rather than a called API. It is typically invoked by Oracle Receivables' own transaction-processing logic — such as credit memo application, adjustments, or line-level updates — when a caller must serialize modification of a specific transaction line. Because it is not classified as a public API and is referenced by zero other documented packages (per ETRM metadata), custom code should avoid depending on it directly; the supported, stable alternative for line-level operations is to operate through the documented Receivables public APIs or to manage locking with standard SQL constructs against RA_CUSTOMER_TRX_LINES. The procedure's parameters correspond one-to-one with line columns, so any custom invocation would require assembling the full line image, reinforcing that it is intended for internal reuse where the complete line context is already available. Given its 2005 vintage and lack of documented external dependents, it should be regarded as a legacy internal helper that remains in the codebase for backward compatibility across EBS 12.1.1 and 12.2.2.