Oracle Message ORA-09803 - Allocation of string buffer failed.

ERRORAllocation of string buffer failed.
CAUSEa buffer used to hold the name of the file for which a label was to be obtained could not be allocated.
ACTIONCheck the UNIX error number for a possible operating system failure. If there is no error, contact Oracle Support Services. The number of bytes that ORACLE attempted to allocate is in the Additional Information field.