Oracle Error Codes

(NTEXTCNV02) Invalid escape sequence in argument to UNISTR function: string.

The user called the UNISTR function on a string that had an invalid escape sequence. The only valid escape sequences in UNISTR are 1.) an escape-escape sequence, and 2.) an escape, followed by exactly four hexadecimal digits.

How to Solve :

Make sure that all escape sequences in UNISTR arguments are exactly four hexadecimal digits. To represent codepoints whose value is less than 0×1000, use preceding zeros. WRONG: 0×10; RIGHT: 0×0010.