Cause: A host variable that is protected
from update was used in a context that allows an update.
Action: Check the context and change the
use of the host variable, or assign the value of the host variable to a PL/SQL
local variable, then use the local variable instead.

Relared Errors:
PLS-00904:
insufficient privilege to access object string
PLS-00905:
object string is invalid
PLS-00906:
Compilation is not possible
PLS-00907:
cannot load library unit string (referenced by
string)
PLS-00908: The
stored format of string is not supported by this
release
PLS-00909:
object string is not declared or insufficient privileges to access
object
PLS-00910:
insufficient privilege to inherit from type string
PLS-00920:
parameter plsql_native_library_dir is not set
PLS-00923:
native compilation failed: string:string
PLS-00924:
native compilation is not supported on this platform