Log buffer information is:
NodeNo: Node Number
Available: amount of memory allocated for the log buffer in MB
Free: amount of free memory in MB
Do not worry if free space is very small, since HADB starts compressing the log buffer. HADB starts compression from the head of the ring buffer and performs it on consecutive log records. Compression cannot proceed when HADB encounters a log record that has not been executed by the node and received by the mirror node
For example:
NodeNO Avail Free 0 16 21 16 3 |