If you exceed system limitations you can experience an application outage or a system outage. Avoid these types of outages by being aware of the maximum capacities and system limitations in advance.
Even though system limitations can be difficult to predict,
this topic can help you understand your system's maximum capacity. The tables
in this topic itemize some of the capacity limitations and restrictions that
can affect the availability of large systems and their applications. For example,
an online application halts when the size of a file or the number of its
members reaches the size limitation. These tables list the limits or maximum
values for V5R4. Some of these maximum values are different (lower) on prior
releases. Also, there are environments or configurations where the actual
limit may be less than the stated maximum. For example, certain high-level
languages can have more restrictive limits. These limits can range from a
certain number of objects to memory limitations. Memory limitations are measured
in megabytes, gigabytes, and terabytes.Note: The values listed in this topic
represent theoretical limits, not thresholds or recommendations. Approaching
some of these limits may be unreasonable and can degrade performance. Therefore,
practical limits may be lower, depending on system size, configuration, and
application environment.
