Parameters Related to Efficient Data Compression Algorithms

pca_shared_buffer

Parameter description: Similar to shared_buffers, this parameter is used to set the size of the page compression block address mapping management buffer.

This parameter is a POSTMASTER parameter. Set it based on instructions provided in Table 1.

Value range: 64 KB to 16 GB.

NOTE:
If the value is less than 64 KB, an error is reported.
If the value is greater than 16 GB, the parameter can be set successfully. However, in actual running, the automatic memory running is set to 16 GB.
If the parameter does not contain a unit, the default value is 8 KB (the size of a page is 8 KB) multiplied by the parameter value.