94 lines
3.2 KiB
SQL
94 lines
3.2 KiB
SQL
/*
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================================================================================
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MARS-1056: Master Rollback Script for VARCHAR2 Definition Fixes
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Author: Grzegorz Michalski
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Date: November 25, 2025
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Purpose: Main rollback script for VARCHAR2 fixes in case of issues
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USAGE:
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sql 'CT_MRDS/Cloudpass#34@ggmichalski_high' '@rollback_mars1056.sql'
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================================================================================
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*/
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-- Dynamic spool file generation (using SYS_CONTEXT - no DBA privileges required)
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var filename VARCHAR2(100)
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BEGIN
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:filename := 'ROLLBACK_MARS_1056_' || SYS_CONTEXT('USERENV', 'CON_NAME') || '_' || TO_CHAR(SYSDATE,'YYYYMMDD_HH24MISS') || '.log';
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END;
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/
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column filename new_value _filename
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select :filename filename from dual;
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spool &_filename
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SET ECHO OFF
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SET TIMING ON
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SET SERVEROUTPUT ON SIZE UNLIMITED
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SET PAUSE OFF
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PROMPT
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PROMPT ========================================================================
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PROMPT MARS-1056: VARCHAR2 Definition Fixes ROLLBACK
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PROMPT ========================================================================
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PROMPT
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PROMPT WARNING: This will rollback all MARS-1056 changes!
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PROMPT
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PROMPT After rollback:
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PROMPT - FILE_MANAGER will use original VARCHAR2 definition logic
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PROMPT - External tables will again have data_length based definitions
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PROMPT - CHAR/BYTE semantics will NOT be preserved from templates
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PROMPT
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PROMPT Continue only if you are experiencing issues with MARS-1056 changes
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PROMPT
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PROMPT ========================================================================
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-- Confirm rollback with user
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ACCEPT continue CHAR PROMPT 'Type YES to continue with rollback, or Ctrl+C to abort: '
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WHENEVER SQLERROR EXIT SQL.SQLCODE
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BEGIN
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IF '&continue' IS NULL OR TRIM('&continue') IS NULL OR UPPER(TRIM('&continue')) != 'YES' THEN
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RAISE_APPLICATION_ERROR(-20001, 'Rollback aborted by user');
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END IF;
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END;
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/
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WHENEVER SQLERROR CONTINUE
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-- Set current schema context
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ALTER SESSION SET CURRENT_SCHEMA = CT_MRDS;
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PROMPT
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PROMPT === Step 1: Rollback packages to pre-MARS-1056 versions ===
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@@91_MARS_1056_rollback_packages.sql
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PROMPT
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PROMPT === Step 2: Track rollback version ===
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@@track_package_versions.sql
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PROMPT
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PROMPT === Step 3: Verify all tracked packages ===
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@@verify_packages_version.sql
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PROMPT
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PROMPT ========================================================================
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PROMPT MARS-1056: Rollback completed successfully
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PROMPT ========================================================================
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PROMPT
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PROMPT All packages have been restored to pre-MARS-1056 state:
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PROMPT - FILE_MANAGER: Original VARCHAR2 definition logic restored (v3.2.1)
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PROMPT - FILE_MANAGER_ODS: Unchanged (v2.1.0 - wrapper only)
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PROMPT - External tables will use data_length based definitions again
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PROMPT
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PROMPT Impact:
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PROMPT - VARCHAR2 columns in external tables will NOT match template definitions
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PROMPT - CHAR semantics will be lost (converted to BYTE with larger sizes)
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PROMPT - This is the original problematic behavior that MARS-1056 was meant to fix
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PROMPT
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PROMPT Rollback tracking has been logged for audit purposes.
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PROMPT
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PROMPT ========================================================================
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PROMPT Rollback log saved to: &_filename
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PROMPT ========================================================================
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spool off
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quit;
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