Updated on 2024-06-03 GMT+08:00

GLOBAL_SINGLE_FLUSH_DW_STATUS

GLOBAL_SINGLE_FLUSH_DW_STATUS displays information about doublewrite files eliminated on a single page of all instances in the entire cluster, as described in Table 1. In the displayed information, the information before the slash (/) indicates the page flushing status of the first version, and the information after the slash (/) indicates the page flushing status of the second version. The doublewrite page flushing status of the first version refers to performing single-page eviction doublewrite on a non-segment-page page, and the doublewrite page flushing case of the second version refers to performing single-page eviction doublewrite on a segment-page page.

Table 1 GLOBAL_SINGLE_FLUSH_DW_STATUS columns

Name

Type

Description

node_name

text

Instance name.

curr_dwn

text

Sequence number of the doublewrite file.

curr_start_page

text

Start position of the current doublewrite file.

total_writes

text

Total number of data write pages in the current doublewrite file.

file_trunc_num

text

Number of times that the doublewrite file is reused.

file_reset_num

text

Number of reset times after the doublewrite file is full.