– SSIS‑776 is a long‑standing bug in SQL Server Integration Services (SSIS) that causes packages to crash, leak memory, or return 0xC0010009 – The XML source is not valid when processing XML files larger than ~150 MB. The root cause is a buffer overflow in the XML Source component’s internal XmlReader when the document contains deeply nested elements (> 25 levels) combined with large text nodes . The fix shipped in SQL Server 2019 CU8 (and later cumulative updates) replaces the parser with a streaming XmlReaderSettings that disables DtdProcessing and enforces a max depth of 10 k characters per node. Until you can apply the hot‑fix, the recommended work‑around is to split the XML upstream, use the Script Component (or a custom .NET parser), or switch to the XML Task in a separate Control Flow step.
: Enable logging within your SSIS package and review the logs for detailed information about where things are going wrong. SSIS-776
The term "SSIS-776" may seem unfamiliar to many, but for those in the know, particularly in the realm of information technology and database management, it holds significant relevance. SSIS, standing for SQL Server Integration Services, is a crucial component of Microsoft's SQL Server, used for building enterprise-level data integration and workflow solutions. The number "776" appended to SSIS refers to a specific error code within the vast array of codes that can occur in the SSIS environment. – SSIS‑776 is a long‑standing bug in SQL