Init

MARS_Packages/REL01/MARS-1056/rollback_mars1056.sql

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+/*
+================================================================================
+MARS-1056: Master Rollback Script for VARCHAR2 Definition Fixes
+Author: Grzegorz Michalski
+Date: November 25, 2025
+Purpose: Main rollback script for VARCHAR2 fixes in case of issues
+
+USAGE:
+sql 'CT_MRDS/Cloudpass#34@ggmichalski_high' '@rollback_mars1056.sql'
+================================================================================
+*/
+
+-- Dynamic spool file generation (using SYS_CONTEXT - no DBA privileges required)
+var filename VARCHAR2(100)
+BEGIN
+    :filename := 'ROLLBACK_MARS_1056_' || 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 ========================================================================
+PROMPT   MARS-1056: VARCHAR2 Definition Fixes ROLLBACK
+PROMPT ========================================================================
+PROMPT
+PROMPT WARNING: This will rollback all MARS-1056 changes!
+PROMPT
+PROMPT After rollback:
+PROMPT - FILE_MANAGER will use original VARCHAR2 definition logic
+PROMPT - External tables will again have data_length based definitions
+PROMPT - CHAR/BYTE semantics will NOT be preserved from templates
+PROMPT
+PROMPT Continue only if you are experiencing issues with MARS-1056 changes
+PROMPT
+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(-20001, 'Rollback aborted by user');
+    END IF;
+END;
+/
+WHENEVER SQLERROR CONTINUE
+
+-- Set current schema context  
+ALTER SESSION SET CURRENT_SCHEMA = CT_MRDS;
+
+PROMPT
+PROMPT === Step 1: Rollback packages to pre-MARS-1056 versions ===
+@@91_MARS_1056_rollback_packages.sql
+
+PROMPT
+PROMPT === Step 2: Track rollback version ===
+@@track_package_versions.sql
+
+PROMPT
+PROMPT === Step 3: Verify all tracked packages ===
+@@verify_packages_version.sql
+
+PROMPT
+PROMPT ========================================================================
+PROMPT   MARS-1056: Rollback completed successfully
+PROMPT ========================================================================
+PROMPT
+PROMPT All packages have been restored to pre-MARS-1056 state:
+PROMPT - FILE_MANAGER: Original VARCHAR2 definition logic restored (v3.2.1)
+PROMPT - FILE_MANAGER_ODS: Unchanged (v2.1.0 - wrapper only)
+PROMPT - External tables will use data_length based definitions again
+PROMPT
+PROMPT Impact:
+PROMPT - VARCHAR2 columns in external tables will NOT match template definitions
+PROMPT - CHAR semantics will be lost (converted to BYTE with larger sizes)
+PROMPT - This is the original problematic behavior that MARS-1056 was meant to fix
+PROMPT
+PROMPT Rollback tracking has been logged for audit purposes.
+PROMPT
+PROMPT ========================================================================
+PROMPT Rollback log saved to: &_filename
+PROMPT ========================================================================
+
+spool off
+
+quit;