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GLOBAL_STAT_DATABASE

GLOBAL_STAT_DATABASE contains every row of each database on each node in MogDB, showing database-wide statistics.

Table 1 GLOBAL_STAT_DATABASE columns

Name Type Description
node_name name Node name
datid oid OID of the database
datname name Name of the database
numbackends integer Number of backends currently connected to this database. This is the only column in this view that returns a value reflecting the current state; all other columns return the accumulated values since the last reset.
xact_commit bigint Number of transactions in this database that have been committed
xact_rollback bigint Number of transactions in this database that have been rolled back
blks_read bigint Number of disk blocks read in this database
blks_hit bigint Number of times disk blocks were found in the buffer cache (unnecessary as the number includes only hits in the database kernel buffer cache)
tup_returned bigint Number of rows returned by queries in this database
tup_fetched bigint Number of rows fetched by queries in this database
tup_inserted bigint Number of rows inserted by queries in this database
tup_updated bigint Number of rows updated by queries in this database
tup_deleted bigint Number of rows deleted by queries in this database
conflicts bigint Number of queries canceled due to database recovery conflicts (conflicts occurring only on the standby server). For details, see STAT_DATABASE_CONFLICTS.
temp_files bigint Number of temporary files created by queries in this database. All temporary files are counted, regardless of why the temporary file was created (for example, sorting or hashing), and regardless of the log_temp_files setting.
temp_bytes bigint Total amount of data written to temporary files by queries in this database. All temporary files are counted, regardless of why the temporary file was created, and regardless of the log_temp_files setting.
deadlocks bigint Number of deadlocks detected in this database
blk_read_time double precision Time spent reading data file blocks by backends in this database (unit: ms)
blk_write_time double precision Time spent writing into data file blocks by backends in this database (unit: ms)
stats_reset timestamp with time zone Time at which the current statistics were reset
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