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EBS Reference

MTL_CATEGORIES_B

Schema: INVmaster

The category master — one row per category code combination, with the SEGMENTn flexfield columns the category name concatenates from, keyed by the flexfield structure

Notes

Categories are org-independent. The DESCRIPTION here is the untranslated copy; the language-correct description lives on the translation companion (MTL_CATEGORIES_TL, not yet cataloged).

What the badges mean
Schema: INV
Schema: the Oracle product schema that owns the table (INV, ONT, WSH, PO, BOM, WIP, MRP, MSC, AR, AP, GL, HR, APPLSYS) — tells you which product family the object belongs to, not who can query it.
master
Data class: what the table holds — master data, transaction documents, control/configuration, interface/staging, or an APPS-schema view.

Structural facts — how the table is partitioned, not a trap by itself

OU-striped (ORG_ID)
Rows are scoped to an operating unit. A landed extract carries every operating unit’s rows — filter or join on ORG_ID, and don’t confuse it with ORGANIZATION_ID (see the quirks guide).
Per inventory org
Rows are scoped to an inventory organization (plant or warehouse) via ORGANIZATION_ID — a different partition from OU-striped tables (see the quirks guide).
Language-striped
The table carries a LANGUAGE column (a _TL translation table or FND_LOOKUP_VALUES) — one row per language. Filter to one LANGUAGE or a join multiplies rows (see the quirks guide).

Join & extract hazards — verify before you rely on this

View
This is an APPS-schema convenience view, not a physical table. Extract the base tables it joins instead — views can be slow at scale and aren't guaranteed stable across patches.
In field listings, the Key chip marks a primary-key field.

Fields

9 fields · 1 key

9 fields.

Table fields: position, field name, description, data type, and flags. 9 fields.
#FieldDescriptionTypeFlags
1CATEGORY_IDSurrogate key of the categoryNUMBER
Primary-key field
2STRUCTURE_IDThe flexfield structure the category's segments belong toNUMBER
3SEGMENT1Category flexfield segment 1 — the category name is the configured concatenationVARCHAR2
4SEGMENT2Category flexfield segment 2VARCHAR2
5SEGMENT3Category flexfield segment 3VARCHAR2
6DESCRIPTIONCategory description — untranslated copy; the language-correct text is on the TL companionVARCHAR2
7ENABLED_FLAGWhether the category is activeVARCHAR2
8DISABLE_DATEWhen the category was disabled — NULL while activeDATE
9SUMMARY_FLAGWhether this is a summary (rollup) categoryVARCHAR2

Field provenance: hand-curated. 1 key field.

Boilerplate SQL

Starting point for reading MTL_CATEGORIES_B on Databricks — real DATE columns need no conversion, and the org anchor is already in place. The optional LAST_UPDATE_DATE watermark is included. Set your Unity Catalog location, schema, and org values below; they’re substituted into the SQL and the copy button.

Query parameters

4 parameters not filled: <catalog>, <schema>, <CATEGORY_ID>, <watermark>

-- ============================================================
-- Table  : MTL_CATEGORIES_B — The category master — one row per category code combination, with the SEGMENTn flexfield columns the category name concatenates from, keyed by the flexfield structure
-- Purpose: Column-selected read of MTL_CATEGORIES_B — auto-generated from field metadata
-- Grain  : One row per CATEGORY_ID
-- Notes  : Auto-generated skeleton for Oracle EBS R12 data landed in your lakehouse. Dates are real DATE/TIMESTAMP columns — no conversion needed. WHO audit columns omitted (see the quirks guide); the optional LAST_UPDATE_DATE watermark filter supports incremental extracts.
-- ============================================================
SELECT
  t.CATEGORY_ID AS "Surrogate key of the category",
  t.STRUCTURE_ID AS "The flexfield structure the category's segments belong to",
  t.SEGMENT1 AS "Category flexfield segment 1 — the category name is the configured concatenation",  -- flexfield segment: concatenation is configuration-defined — see quirks guide #flexfields
  t.SEGMENT2 AS "Category flexfield segment 2",  -- flexfield segment: concatenation is configuration-defined — see quirks guide #flexfields
  t.SEGMENT3 AS "Category flexfield segment 3",  -- flexfield segment: concatenation is configuration-defined — see quirks guide #flexfields
  t.DESCRIPTION AS "Category description — untranslated copy; the language-correct text is on the TL companion",
  t.ENABLED_FLAG AS "Whether the category is active",
  t.DISABLE_DATE AS "When the category was disabled — NULL while active",
  t.SUMMARY_FLAG AS "Whether this is a summary (rollup) category"
FROM <catalog>.<schema>.MTL_CATEGORIES_B t
WHERE
  1 = 1  -- no partition column on this table; the filters below are optional
  -- AND t.CATEGORY_ID = <CATEGORY_ID>
  -- AND t.LAST_UPDATE_DATE >= TIMESTAMP '<watermark>'  -- WHO watermark, bulk-stamped by batch jobs; see quirks guide #who-columns
ORDER BY t.CATEGORY_ID;

Verified September 2026

Relationships

Diagram of 1-hop neighbors — join details below. FND lookup decode and translation edges are highlighted; they’re the joins newcomers most often get wrong.

Join details

  • MTL_ITEM_CATEGORIESMTL_CATEGORIES_Bforeign key · N:1
    ON MTL_ITEM_CATEGORIES.CATEGORY_ID = MTL_CATEGORIES_B.CATEGORY_ID
  • MTL_CATEGORY_SETS_BMTL_CATEGORIES_Bforeign key · N:1
    ON MTL_CATEGORY_SETS_B.DEFAULT_CATEGORY_ID = MTL_CATEGORIES_B.CATEGORY_ID
  • PO_LINES_ALLMTL_CATEGORIES_Bforeign key · N:1
    ON PO_LINES_ALL.CATEGORY_ID = MTL_CATEGORIES_B.CATEGORY_ID

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