When identifiers (for example, column or table names) are specified in the external table access parameters, certain values are considered to be reserved words by the access parameter parser. If a reserved word is used as an identifier, then it must be enclosed in double quotation marks. The following are the reserved words for the ORACLE_DATAPUMP access driver:
BADFILE
COMPATIBLE
COMPRESSION
DATAPUMP
DEBUG
ENCRYPTION
INTERNAL
JOB
LATEST
LOGFILE
NOBADFILE
NOLOGFILE
PARALLEL
TABLE
VERSION
WORKERID