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feat(MARS-835): Enhance EXPORT_PARTITION_PARALLEL with pTaskName parameter for session isolation and optimize chunk retrieval logic

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Grzegorz Michalski
2026-02-25 09:49:25 +01:00
parent 04d4f6ac02
commit c68d5bfe2c
3 changed files with 74 additions and 55 deletions
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16
MARS_Packages/REL01_ADDITIONS/MARS-835-PREHOOK/new_version/DATA_EXPORTER.pkg
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@@ -9,17 +9,17 @@ AS
**/
-- Package Version Information
PACKAGE_VERSION CONSTANT VARCHAR2(10) := '2.12.0';
PACKAGE_BUILD_DATE CONSTANT VARCHAR2(20) := '2026-02-24 14:30:00';
PACKAGE_VERSION CONSTANT VARCHAR2(10) := '2.14.0';
PACKAGE_BUILD_DATE CONSTANT VARCHAR2(20) := '2026-02-25 09:00:00';
PACKAGE_AUTHOR CONSTANT VARCHAR2(100) := 'Grzegorz Michalski';
-- Version History (last 3-5 changes)
VERSION_HISTORY CONSTANT VARCHAR2(4000) :=
'v2.14.0 (2026-02-25): OPTIMIZATION - Added pTaskName parameter to EXPORT_PARTITION_PARALLEL for deterministic filtering. Replaced FETCH FIRST 1 ROW ONLY safeguard with precise WHERE CHUNK_ID AND TASK_NAME filter. Eliminates ORDER BY overhead and provides cleaner session isolation.' || CHR(10) ||
'v2.13.1 (2026-02-25): CRITICAL FIX - Added START_ID and END_ID aliasses in CREATE_CHUNKS_BY_SQL to avoid ORA-00960 ambiguous column naming error.' || CHR(10) ||
'v2.13.0 (2026-02-25): CRITICAL SESSION ISOLATION FIX - Changed CREATE_CHUNKS_BY_NUMBER_COL to CREATE_CHUNKS_BY_SQL with TASK_NAME filter (fixes ORA-01422 in concurrent sessions). Added ORDER BY CREATED_DATE DESC FETCH FIRST 1 ROW safeguard to EXPORT_PARTITION_PARALLEL SELECT. Composite PK (TASK_NAME, CHUNK_ID) now fully functional.' || CHR(10) ||
'v2.12.0 (2026-02-24): CRITICAL FIX - Rewritten DELETE_FAILED_EXPORT_FILE to use file-specific pattern matching (prevents deleting parallel CSV chunks in shared folder). Added vQuery logging before DBMS_CLOUD calls. Added CSV maxfilesize logging.' || CHR(10) ||
'v2.11.0 (2026-02-18): Added pJobClass parameter to EXPORT_TABLE_DATA_BY_DATE and EXPORT_TABLE_DATA_TO_CSV_BY_DATE for Oracle Scheduler job class support (resource/priority management).' || CHR(10) ||
'v2.10.1 (2026-02-17): CRITICAL FIX - Remove redundant COMPLETED chunks deletion before parallel export that caused ORA-01403 errors (phantom chunks created by CREATE_CHUNKS_BY_NUMBER_COL).' || CHR(10) ||
'v2.10.0 (2026-02-13): CRITICAL FIX - Register ALL files created by DBMS_CLOUD.EXPORT_DATA (multi-file support due to Oracle parallel processing on large instances). Prevents orphaned files in rollback.' || CHR(10) ||
'v2.9.0 (2026-02-13): Added pProcessName parameter to EXPORT_TABLE_DATA and EXPORT_TABLE_DATA_TO_CSV_BY_DATE procedures for process tracking in A_SOURCE_FILE_RECEIVED table.' || CHR(10);
'v2.11.0 (2026-02-18): Added pJobClass parameter to EXPORT_TABLE_DATA_BY_DATE and EXPORT_TABLE_DATA_TO_CSV_BY_DATE for Oracle Scheduler job class support (resource/priority management).' || CHR(10);
cgBL CONSTANT VARCHAR2(2) := CHR(13)||CHR(10);
vgMsgTmp VARCHAR2(32000);
@@ -54,10 +54,12 @@ AS
* but should NOT be called directly by external code.
* @param pStartId - Chunk start ID (CHUNK_ID from A_PARALLEL_EXPORT_CHUNKS table)
* @param pEndId - Chunk end ID (same as pStartId for single-row chunks)
* @param pTaskName - Task name for session isolation (optional, DEFAULT NULL for backward compatibility)
**/
PROCEDURE EXPORT_PARTITION_PARALLEL (
pStartId IN NUMBER,
pEndId IN NUMBER
pEndId IN NUMBER,
pTaskName IN VARCHAR2 DEFAULT NULL
);
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