OCI-59052
Memory allocation failed because maximum designated memory slots are used up.
Cause
An attempt to allocate memory was denied because the designated memory slots were used up.
Action
Increasing the size of the memory will not prevent this error. There is a fixed number of designated memory slots for certain operations. If the error occurs in the Oracle Automatic Storage (Oracle ASM) instance, then decrease the number of disk and disk group operations. Otherwise, if the error happens in the Oracle Database instance, then decrease the number of RMAN operations. Retry the operation.