Init

MARS_Packages/REL01_POST_DEACTIVATION/MARS-835-PREHOOK/rollback_mars835_prehook.sql

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+-- ===================================================================
+-- MARS-835-PREHOOK ROLLBACK SCRIPT: Parallel Processing + Smart Column Mapping
+-- ===================================================================
+-- Purpose: Rollback for MARS-835-PREHOOK - Restore previous package versions
+-- Author: Grzegorz Michalski
+-- Date: 2026-01-09
+-- Version: ENV_MANAGER 3.1.0, DATA_EXPORTER 2.1.0 (rollback targets)
+
+-- Dynamic spool file generation (using SYS_CONTEXT - no DBA privileges required)
+-- IMPORTANT: Ensure log/ directory exists before SPOOL (use host mkdir)
+host mkdir log 2>nul
+
+var filename VARCHAR2(100)
+BEGIN
+    :filename := 'log/ROLLBACK_MARS_835_PREHOOK_' || SYS_CONTEXT('USERENV', 'CON_NAME') || '_' || TO_CHAR(SYSDATE,'YYYYMMDD_HH24MISS') || '.log';
+END;
+/
+column filename new_value _filename
+select :filename filename from dual;
+spool &_filename
+
+SET ECHO OFF
+SET TIMING ON
+SET SERVEROUTPUT ON SIZE UNLIMITED
+SET PAUSE OFF
+
+PROMPT =========================================================================
+PROMPT MARS-835-PREHOOK: Rollback to Previous Versions
+PROMPT =========================================================================
+PROMPT WARNING: This will reverse all changes from MARS-835-PREHOOK installation!
+PROMPT - Removes A_PARALLEL_EXPORT_CHUNKS table
+PROMPT - Restores ENV_MANAGER v3.1.0 (removes parallel error codes)
+PROMPT - Restores DATA_EXPORTER v2.1.0 (removes parallel + Smart Column Mapping)
+PROMPT =========================================================================
+
+-- Confirm rollback with user
+ACCEPT continue CHAR PROMPT 'Type YES to continue with rollback, or Ctrl+C to abort: '
+WHENEVER SQLERROR EXIT SQL.SQLCODE
+BEGIN
+    IF '&continue' IS NULL OR TRIM('&continue') IS NULL OR UPPER(TRIM('&continue')) != 'YES' THEN
+        RAISE_APPLICATION_ERROR(-20999, 'Rollback aborted by user.');
+    END IF;
+END;
+/
+WHENEVER SQLERROR CONTINUE
+
+-- Execute rollback scripts in reverse order of installation
+PROMPT 
+PROMPT =========================================================================
+PROMPT Step 0: Drop A_PARALLEL_EXPORT_CHUNKS Table
+PROMPT =========================================================================
+@@90_MARS_835_PREHOOK_rollback_PARALLEL_CHUNKS_TABLE.sql
+
+PROMPT 
+PROMPT =========================================================================
+PROMPT Step 1: Rollback ENV_MANAGER Package
+PROMPT =========================================================================
+@@91_MARS_835_PREHOOK_rollback_ENV_MANAGER.sql
+
+PROMPT 
+PROMPT =========================================================================
+PROMPT Step 2: Rollback DATA_EXPORTER Package
+PROMPT =========================================================================
+@@92_MARS_835_PREHOOK_rollback_DATA_EXPORTER.sql
+
+PROMPT 
+PROMPT =========================================================================
+PROMPT Step 3: Track Rollback Version
+PROMPT =========================================================================
+@@track_package_versions.sql
+
+PROMPT 
+PROMPT =========================================================================
+PROMPT Step 4: Verify Package Versions After Rollback
+PROMPT =========================================================================
+@@verify_packages_version.sql
+
+PROMPT 
+PROMPT =========================================================================
+PROMPT MARS-835-PREHOOK Rollback - COMPLETED
+PROMPT =========================================================================
+
+spool off
+
+quit;