Error
Error Code:
4145
MySQL Error 4145: Internal Copy Buffer Exceeded
Description
This error occurs when MySQL attempts to copy column data containing escaped characters, but the amount of data requiring escaping exceeds the size of its internal processing buffer. It typically happens during bulk data loading operations like `LOAD DATA INFILE` when a specific file contains unusually complex or lengthy escaped sequences.
Error Message
The column data that needed to be copied due to escaped characters exceeded the size of the internal copy buffer for file '%s'.
Known Causes
3 known causesExcessive Escaped Characters
A particular column in the input file contains an unusually high number of characters that need to be escaped (e.g., backslashes, quotes), consuming more buffer space.
Insufficient Default Buffer
The default internal buffer allocated by MySQL for handling escaped characters is not large enough for the current data set being processed.
Malformed Data Format
The input data file is malformed or incorrectly formatted, causing an unexpected increase in the perceived number of characters requiring escaping.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service