t if the LOB pointed to by lob-locator is opened (by ora-lob-open).
If an error occurs and errorp is true, an error is signaled. If errorp is false, the function returns an object of type sql-database-error. The default value of errorp is
ora-lob-is-openis available only when the "oracle" module is loaded. See the section Oracle LOB interface for more information.
LispWorks User Guide and Reference Manual - 20 Sep 2017