Ssis-776

1️⃣ Why “Dynamic Partition Pruning” Was Needed

• Free text, UTF-8, subject to rules above.
• Must not contain the exact delimiter string "---END---".
• If structured data is needed, use JSON or YAML fenced within the payload.

Chunked File Reads

| Practice | Why It Helps | Quick Implementation | |----------|--------------|----------------------| | – Use the Flat File Connection Manager with Rows per batch = 10,000 | Prevents a single massive buffer from locking the engine | Set in Advanced → BufferSize | | Compressed CSV (gzip) – Decompress on‑the‑fly with a Script Task | Reduces I/O and network pressure | System.IO.Compression.GZipStream | | Parallel Pipelines – Split the file into N parts and run N data flows concurrently (e.g., 4‑way) | Utilizes all cores; each pipeline handles a smaller slice | Use a ForEach Loop container with a File Enumerator | | Column‑Level Data Types – Cast large text columns to NVARCHAR(MAX) only when needed | Avoids unnecessary memory allocation for smaller columns | In the ADO.NET Source query: SELECT CAST(JsonPayload AS NVARCHAR(MAX)) … | | Monitoring – Add an SSISDB Catalog alert on pipeline buffer overflow events | Early detection before SLA breach | CREATE EVENT NOTIFICATION … |