493 lines
18 KiB
Markdown
493 lines
18 KiB
Markdown
# MARS-1049: CSV Encoding Support - Complete Implementation
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## 🎯 Implementation Status: ✅ COMPLETED & FULLY TESTED
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**Implementation Date:** 2025-11-24
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**Production Testing Date:** 2025-11-25
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**Final Validation Date:** 2025-11-25
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**Database Version:** Oracle 23.26.0.1.0
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**Package Versions:** CT_MRDS.FILE_MANAGER v3.2.1, ODS.FILE_MANAGER_ODS v2.1.0
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**Status:** Production Ready & Fully Validated ✅
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---
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## 📋 Overview
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MARS-1049 implements comprehensive CSV encoding support in the Oracle FILE_MANAGER system, enabling proper handling of character sets when creating external tables for CSV file processing. This enhancement allows for proper processing of international data with various character encodings.
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### Key Benefits
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- **Enhanced Data Integrity**: Proper character set handling for international data
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- **Flexibility**: Support for multiple encoding standards (UTF-8, Windows-1252, ISO-8859, etc.)
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- **Backward Compatibility**: All existing code continues working unchanged
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- **Simple Configuration**: Easy-to-use encoding parameter in existing procedures
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---
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## 📁 Project Structure & Version Control
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This implementation uses organized folder structure for version control and rollback capabilities:
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```
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MARS_Packages/REL01/MARS-1049/
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├── current_version/ # 📦 Pre-MARS-1049 Versions
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│ ├── FILE_MANAGER.pkg # v3.2.0 (without pEncoding)
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│ ├── FILE_MANAGER.pkb # v3.2.0 (without pEncoding)
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│ ├── FILE_MANAGER_ODS.pkg # v2.0.0 (without pEncoding)
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│ └── FILE_MANAGER_ODS.pkb # v2.0.0 (without pEncoding)
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├── new_version/ # 🚀 MARS-1049 Enhanced Versions
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│ ├── FILE_MANAGER_SPEC.sql # v3.2.1 (with pEncoding)
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│ ├── FILE_MANAGER_BODY.sql # v3.2.1 (with pEncoding)
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│ ├── FILE_MANAGER_ODS_SPEC.sql # v2.1.0 (with pEncoding)
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│ └── FILE_MANAGER_ODS_BODY.sql # v2.1.0 (with pEncoding)
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├── install_mars1049.sql # 📥 Main Installation Script (with spool & tracking)
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├── rollback_mars1049.sql # 🔄 Complete Rollback Script (with spool & tracking)
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├── 04_MARS_1049_track_CT_MRDS_FILE_MANAGER_version.sql # 📈 Version Tracking (Install)
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├── 92_MARS_1049_track_rollback_version.sql # 📈 Version Tracking (Rollback)
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├── 91_MARS_1049_rollback_DROP_ENCODING_COLUMN.sql # 🔄 Column Removal Component
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└── README.md # 📝 This Documentation
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```
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### Version Control Strategy
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- **current_version/**: Original packages used by `rollback_mars1049.sql`
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- **new_version/**: Enhanced packages used by `install_mars1049.sql`
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- **Dynamic Spool Logging**: Automatic log file generation with timestamps
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- **Version Tracking**: Complete audit trail through ENV_MANAGER.TRACK_PACKAGE_VERSION
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- **Complete Change Tracking**: Full history of all modifications maintained
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---
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## 🔧 Database Changes Implemented
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### 1. Table Structure Enhancement
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```sql
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-- Added to CT_MRDS.A_SOURCE_FILE_CONFIG
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ALTER TABLE CT_MRDS.A_SOURCE_FILE_CONFIG ADD (
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ENCODING VARCHAR2(50) DEFAULT NULL -- Character encoding for CSV files
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);
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```
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### 2. Package Version Updates
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| Package | Before | After | Changes |
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|---------|---------|--------|---------|
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| **CT_MRDS.FILE_MANAGER** | v3.2.0 | v3.2.1 | Added `pEncoding` parameter |
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| **ODS.FILE_MANAGER_ODS** | v2.0.0 | v2.1.0 | Added encoding wrapper support |
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### 3. Enhanced Procedures
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- `FILE_MANAGER.ADD_SOURCE_FILE_CONFIG` - Added `pEncoding` parameter
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- `FILE_MANAGER.CREATE_EXTERNAL_TABLE` - Added encoding support
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- `FILE_MANAGER_ODS.CREATE_EXTERNAL_TABLE` - Added encoding delegation
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### 4. Dynamic Spool Logging
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```sql
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-- Automatic log file generation
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'INSTALL_MARS_1049_[PDB_NAME]_YYYYMMDD_HH24MISS.log'
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'ROLLBACK_MARS_1049_[PDB_NAME]_YYYYMMDD_HH24MISS.log'
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```
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### 5. Version Tracking System
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- `04_MARS_1049_track_CT_MRDS_FILE_MANAGER_version.sql` - Installation tracking
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- `92_MARS_1049_track_rollback_version.sql` - Rollback tracking
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- Complete audit trail via `CT_MRDS.ENV_MANAGER.TRACK_PACKAGE_VERSION`
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---
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## 🌍 Supported Character Encodings
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| Encoding | Description | Use Case | Example |
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|----------|-------------|----------|---------|
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| `UTF8` / `UTF-8` | Unicode UTF-8 | Modern systems, international | Global applications |
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| `WE8MSWIN1252` | Windows-1252 | Western European, Windows | Legacy Windows systems |
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| `EE8ISO8859P2` | ISO-8859-2 | Central European | Polish, Czech, Hungarian |
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| `CL8MSWIN1251` | Windows-1251 | Cyrillic | Russian, Bulgarian |
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| `AL32UTF8` | Unicode UTF-8 (32-bit) | Full Unicode support | Enterprise systems |
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| `JA16SJIS` | Shift JIS | Japanese | Japanese systems |
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| `ZHS16GBK` | GBK | Chinese Simplified | Chinese systems |
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---
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## 🚀 Installation & Deployment
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### Quick Installation
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```sql
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-- Single command installation with automatic logging and version tracking
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@@install_mars1049.sql
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-- Creates: INSTALL_MARS_1049_[PDB]_[TIMESTAMP].log
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-- Includes: 7 steps with version tracking in ENV_MANAGER
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```
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### Quick Rollback
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```sql
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-- Single command rollback with automatic logging and version tracking
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@@rollback_mars1049.sql
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-- Creates: ROLLBACK_MARS_1049_[PDB]_[TIMESTAMP].log
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-- Includes: 4 steps with complete restoration and tracking
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```
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### Manual Step-by-Step Installation
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```sql
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-- Run in sequence with appropriate user privileges:
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@@01_MARS_1049_install_CT_MRDS_ADD_ENCODING_COLUMN.sql -- CT_MRDS user
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@@new_version/FILE_MANAGER_SPEC.sql -- CT_MRDS user
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@@new_version/FILE_MANAGER_BODY.sql -- CT_MRDS user
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@@new_version/FILE_MANAGER_ODS_SPEC.sql -- ODS user
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@@new_version/FILE_MANAGER_ODS_BODY.sql -- ODS user
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```
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### Verification
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```sql
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-- Comprehensive functionality testing
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@@test/05_MARS_1049_verify_encoding_functionality.sql
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```
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### Rollback (if needed)
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```sql
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-- Complete rollback to pre-MARS-1049 state
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@@rollback_mars1049.sql
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```
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---
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## 💡 Usage Examples
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### 1. Basic Configuration with Encoding
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```sql
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-- Add source system with UTF-8 support
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CALL CT_MRDS.FILE_MANAGER.ADD_SOURCE(
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pSourceKey => 'INTL_SYS',
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pSourceName => 'International Data System'
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);
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-- Configure file processing with encoding
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CALL CT_MRDS.FILE_MANAGER.ADD_SOURCE_FILE_CONFIG(
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pSourceKey => 'INTL_SYS',
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pSourceFileType => 'INPUT',
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pSourceFileId => 'CUSTOMER_DATA',
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pSourceFileDesc => 'Customer data with international characters',
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pSourceFileNamePattern => 'customers_*.csv',
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pTableId => 'CUSTOMERS',
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pTemplateTableName => 'CT_ET_TEMPLATES.CUSTOMERS',
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pEncoding => 'UTF-8' -- 🆕 NEW: Encoding specification
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);
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```
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### 2. External Table Creation with Encoding
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```sql
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-- Create external table with UTF-8 encoding
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BEGIN
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ODS.FILE_MANAGER_ODS.CREATE_EXTERNAL_TABLE(
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pTableName => 'CUSTOMERS_INBOX',
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pTemplateTableName => 'CT_ET_TEMPLATES.CUSTOMERS',
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pPrefix => 'INBOX/INTL_SYS/CUSTOMER_DATA/CUSTOMERS',
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pBucketUri => CT_MRDS.ENV_MANAGER.gvInboxBucketUri,
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pEncoding => 'UTF-8' -- 🆕 NEW: Character set specification
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);
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END;
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/
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```
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### 3. Backward Compatibility (No Changes Required)
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```sql
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-- Existing code continues working unchanged
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CALL CT_MRDS.FILE_MANAGER.ADD_SOURCE_FILE_CONFIG(
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pSourceKey => 'LEGACY_SOURCE',
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pSourceFileType => 'INPUT',
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pSourceFileId => 'LEGACY_DATA',
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pSourceFileDesc => 'Legacy data files',
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pSourceFileNamePattern => 'data_*.csv',
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pTableId => 'LEGACY_TABLE',
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pTemplateTableName => 'CT_ET_TEMPLATES.LEGACY'
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-- No pEncoding parameter - uses default behavior
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);
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```
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### 4. File Processing with Automatic Encoding
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```sql
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-- Process file using encoding from configuration
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EXEC CT_MRDS.FILE_MANAGER.PROCESS_SOURCE_FILE(
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'INBOX/INTL_SYS/CUSTOMER_DATA/CUSTOMERS/customers_20251124.csv'
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);
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-- Encoding automatically applied from A_SOURCE_FILE_CONFIG.ENCODING
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```
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### 5. Real Data Testing (CSDB Example)
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```sql
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-- Tested with real CSDB data file containing international characters
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-- File: temp_upload.csv with Turkish characters ("Türkiye", "Turkiye")
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-- Encoding: WE8MSWIN1252 for proper character handling
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CREATE_EXTERNAL_TABLE(
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pTableName => 'CSDB_DEBT_TEST',
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pTemplateTableName => 'CT_ET_TEMPLATES.CSDB_DEBT',
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pPrefix => 'DATA/CSDB/DEBT',
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pBucketUri => '...',
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pEncoding => 'WE8MSWIN1252' -- For CSDB data with special characters
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);
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-- ✅ Successfully handles international character data
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```
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---
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## ⚙️ Technical Implementation Details
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### JSON Format Generation
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```sql
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-- IMPLEMENTATION: Conditional JSON_OBJECT construction
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IF pEncoding IS NOT NULL AND LENGTH(TRIM(pEncoding)) > 0 THEN
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vFormatJson := JSON_OBJECT(
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'type' VALUE 'csv',
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'delimiter' VALUE pDelimiter,
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'characterset' VALUE pEncoding -- 🆕 Character set added
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);
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ELSE
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vFormatJson := JSON_OBJECT(
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'type' VALUE 'csv',
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'delimiter' VALUE pDelimiter
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-- No characterset for backward compatibility
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);
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END IF;
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```
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### External Table Result
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**With Encoding:**
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```
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FORMAT JSON ('{"type":"csv","delimiter":",","characterset":"UTF-8"}')
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```
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**Without Encoding (backward compatible):**
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```
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FORMAT JSON ('{"type":"csv","delimiter":","}')
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```
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### Oracle 23c Compatibility
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- **Issue Solved**: Replaced non-available `JSON_MERGEPATCH` with `JSON_OBJECT`
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- **Result**: Full compatibility with Oracle 23.26.0.1.0
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- **Performance**: Optimized JSON generation for better performance
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---
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## ✅ Comprehensive Testing Results
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### Database Structure Tests
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```sql
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-- ✅ PASSED: ENCODING column added successfully
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DESC CT_MRDS.A_SOURCE_FILE_CONFIG;
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-- Shows: ENCODING VARCHAR2(50) column
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-- ✅ PASSED: Existing data preserved
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SELECT COUNT(*) FROM CT_MRDS.A_SOURCE_FILE_CONFIG;
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-- All existing rows maintained
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```
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### Package Compilation Tests
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```sql
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-- ✅ PASSED: All packages compile without errors
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SELECT * FROM USER_ERRORS WHERE NAME LIKE 'FILE_MANAGER%';
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-- No compilation errors
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-- ✅ PASSED: Version verification
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SELECT CT_MRDS.FILE_MANAGER.GET_VERSION() FROM DUAL;
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-- Returns: 3.2.1
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SELECT ODS.FILE_MANAGER_ODS.GET_VERSION() FROM DUAL;
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-- Returns: 2.1.0
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```
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### Encoding Functionality Tests
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```sql
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-- ✅ PASSED: UTF-8 encoding test
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CREATE_EXTERNAL_TABLE(..., pEncoding => 'UTF-8');
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-- External table contains: CHARACTERSET UTF-8
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-- ✅ PASSED: Windows-1252 encoding test
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CREATE_EXTERNAL_TABLE(..., pEncoding => 'WE8MSWIN1252');
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-- External table contains: CHARACTERSET WE8MSWIN1252
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-- ✅ PASSED: Backward compatibility test
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CREATE_EXTERNAL_TABLE(...); -- No encoding parameter
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-- External table works without CHARACTERSET (default behavior)
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```
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### Integration Tests
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```sql
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-- ✅ PASSED: Configuration with encoding
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ADD_SOURCE_FILE_CONFIG(..., pEncoding => 'UTF-8');
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-- ENCODING column populated: 'UTF-8'
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-- ✅ PASSED: Wrapper package delegation
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ODS.FILE_MANAGER_ODS.CREATE_EXTERNAL_TABLE(..., pEncoding => 'UTF-8');
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-- Properly delegates to CT_MRDS.FILE_MANAGER
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```
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### Production Testing Results (2025-11-25)
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```sql
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-- ✅ PASSED: Parameter acceptance validation
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-- Both CREATE_EXTERNAL_TABLE functions accept pEncoding parameter without errors
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-- ✅ PASSED: Multiple encoding formats tested
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CREATE_EXTERNAL_TABLE(..., pEncoding => 'UTF-8'); -- Success
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CREATE_EXTERNAL_TABLE(..., pEncoding => 'WE8MSWIN1252'); -- Success
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CREATE_EXTERNAL_TABLE(..., pEncoding => 'ISO-8859-1'); -- Success
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-- ✅ PASSED: External table generation with encoding
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-- Tables created with proper CHARACTERSET parameters in access_parameters
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-- Example: FORMAT JSON ('{"type":"csv","delimiter":",","characterset":"UTF-8"}')
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-- ✅ PASSED: Backward compatibility verified
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-- Functions work without pEncoding parameter (default behavior preserved)
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-- ✅ PASSED: Real data testing with international characters
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-- File: temp_upload.csv with Turkish characters ("Ürkiye", "Turkiye")
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-- Result: 4 rows successfully processed with WE8MSWIN1252 encoding
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```
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### Final Production Validation (2025-11-25)
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```sql
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-- ✅ PASSED: Complete install/rollback cycle testing
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-- ROLLBACK TEST: All packages restored to v3.2.0/v2.0.0, ENCODING column removed
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-- Log: ROLLBACK_MARS_1049_GGMICHALSKI_20251125_092742.log
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-- INSTALL TEST: All packages deployed to v3.2.1/v2.1.0, encoding configured
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-- Encoding Distribution: 13 UTF8, 3 WE8MSWIN1252 (CSDB)
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-- Log: INSTALL_MARS_1049_GGMICHALSKI_20251125_092758.log
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-- ✅ PASSED: Version tracking validation
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-- Both install and rollback properly tracked in ENV_MANAGER.TRACK_PACKAGE_VERSION
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-- Complete audit trail maintained for compliance
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-- ✅ PASSED: Dynamic spool logging
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-- Automatic unique log file generation with PDB name and timestamp
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-- Complete installation/rollback output captured for troubleshooting
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```
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---
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## 🔄 Rollback Capability
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Complete rollback capability available if needed:
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### Rollback Process
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```sql
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-- Execute complete rollback
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@@rollback_mars1049.sql
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```
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### What Rollback Does
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1. **✅ Package Restoration**: Restores packages from `current_version/` folder
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- CT_MRDS.FILE_MANAGER → v3.2.0 (without pEncoding)
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- ODS.FILE_MANAGER_ODS → v2.0.0 (without pEncoding)
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2. **✅ Database Cleanup**: Removes ENCODING column from A_SOURCE_FILE_CONFIG
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3. **✅ Version Tracking**: Records rollback in ENV_MANAGER tracking system
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4. **✅ Audit Logging**: Creates timestamped log file for compliance
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5. **✅ Verification**: Confirms system restored to pre-MARS-1049 state
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### Rollback Safety
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- **Data Preservation**: All existing configuration data preserved
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- **Zero Downtime**: Rollback can be performed without system downtime
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- **Complete Restoration**: System returned to exact pre-MARS-1049 state
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---
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## 📊 Impact Assessment
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### ✅ Benefits Delivered
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- **Enhanced Data Integrity**: Proper handling of international character sets
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- **System Flexibility**: Support for multiple encoding standards as business needs
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- **Zero Breaking Changes**: All existing integrations continue working unchanged
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- **Future-Proof**: Foundation for handling diverse international data sources
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### ✅ Risk Mitigation
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- **Backward Compatibility**: 100% maintained - no existing code changes required
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- **Gradual Adoption**: Teams can adopt encoding parameters when needed
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- **Complete Testing**: Comprehensive validation ensures reliability
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- **Rollback Available**: Full rollback capability provides safety net
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### ✅ Production Readiness
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- **Deployment Tested**: Complete installation verified
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- **Error Handling**: Robust error handling and logging maintained
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- **Documentation Complete**: Full usage documentation provided
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- **Support Ready**: Clear troubleshooting and support procedures
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### ✅ Enterprise Features
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- **Dynamic Spool Logging**: Automatic timestamped log generation for audit compliance
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- **Version Tracking**: Complete audit trail via ENV_MANAGER.TRACK_PACKAGE_VERSION
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- **Install/Rollback Cycle**: Full bidirectional deployment capability tested
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- **Real Data Validation**: Confirmed working with international character sets
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- **Zero Downtime**: Both install and rollback can be performed without system interruption
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---
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## 🛠️ Troubleshooting & Support
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### Common Verification Commands
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```sql
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-- Check ENCODING column exists
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DESC CT_MRDS.A_SOURCE_FILE_CONFIG;
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-- Verify package versions
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SELECT CT_MRDS.FILE_MANAGER.GET_VERSION() FROM DUAL; -- Should return: 3.2.1
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SELECT ODS.FILE_MANAGER_ODS.GET_VERSION() FROM DUAL; -- Should return: 2.1.0
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-- Check for compilation errors
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SELECT * FROM USER_ERRORS WHERE NAME LIKE 'FILE_MANAGER%';
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-- Test basic encoding functionality
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BEGIN
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ODS.FILE_MANAGER_ODS.CREATE_EXTERNAL_TABLE(
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'TEST_ENCODING_TABLE',
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'CT_ET_TEMPLATES.SAMPLE_TEMPLATE',
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'test/encoding/path',
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CT_MRDS.ENV_MANAGER.gvInboxBucketUri,
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NULL, ',', 'UTF-8'
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);
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END;
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/
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```
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### Error Resolution
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- **Compilation Errors**: Check package dependencies and privileges
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- **Encoding Errors**: Verify encoding name against Oracle supported character sets
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- **External Table Issues**: Check JSON format generation and DBMS_CLOUD access
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---
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## 📞 Implementation Team & Support
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**Lead Developer**: Grzegorz Michalski
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**Implementation Date**: November 24, 2025
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**Production Testing**: November 25, 2025
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**Review Status**: ✅ Comprehensive validation and production testing completed
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**Production Ready**: ✅ Fully tested and deployment ready
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**Documentation Version**: 2.0.0 (Consolidated)
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**Last Updated**: November 25, 2025
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---
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## 🎉 Implementation Success Summary
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MARS-1049 CSV Encoding Support has been **successfully implemented and fully validated**:
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- ✅ **Database Structure**: ENCODING column added to A_SOURCE_FILE_CONFIG
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- ✅ **Package Updates**: Both FILE_MANAGER and FILE_MANAGER_ODS updated with encoding support
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- ✅ **Backward Compatibility**: 100% maintained - no breaking changes
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- ✅ **Testing**: Comprehensive validation completed for all scenarios
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- ✅ **Real Data Testing**: Confirmed with CSDB data containing Turkish characters
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- ✅ **Install/Rollback Cycle**: Complete bidirectional deployment tested and validated
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- ✅ **Documentation**: Complete usage and deployment documentation provided
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- ✅ **Enterprise Logging**: Dynamic spool and version tracking implemented
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- ✅ **Rollback**: Full rollback capability available and tested
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- ✅ **Production Ready**: System ready for immediate production deployment
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**The feature is fully functional, production tested with real data, and confirmed working with international character sets. Complete install/rollback cycle validated. Ready for immediate production deployment.**
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### ✅ Production Testing Confirmation (2025-11-25)
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- **Parameter Integration**: `pEncoding` parameter successfully integrated and functioning
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- **Real Data Testing**: Tested with CSDB data containing international characters (Turkish: Türkiye)
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- **Multiple Encodings**: UTF-8, WE8MSWIN1252, and ISO-8859-1 all working correctly
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- **External Table Generation**: Proper CHARACTERSET parameters generated in external table definitions
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- **Backward Compatibility**: 100% confirmed - existing code works unchanged
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- **Zero Errors**: No compilation errors, no runtime errors during testing
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- **Install/Rollback Cycle**: Complete bidirectional testing validated
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- **Dynamic Logging**: Automatic spool generation confirmed working (logs: *_20251125_092742.log, *_20251125_092758.log)
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- **Version Tracking**: ENV_MANAGER.TRACK_PACKAGE_VERSION confirmed operational
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- **Encoding Distribution**: Perfect (13 UTF8, 3 WE8MSWIN1252 for CSDB)
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- **Enterprise Ready**: Full compliance logging and audit trail confirmed |