This Oracle error occurs when the combined length of concatenated strings exceeds the maximum allowed length. For example, attempting to combine several large text fields into a single column might trigger this error. The limit depends on the character set used and the Oracle version, typically 4000 bytes for `VARCHAR2` in SQL and 32767 bytes in PL/SQL.
Managing string length is crucial for database integrity and performance. Exceeding these limits can lead to application failures and data truncation. Understanding the cause of this error helps developers write more robust and efficient code. This issue has become increasingly relevant with the growing volume of textual data processed by modern applications, necessitating careful handling of large strings.
