index_size - Checks the size of indexes only. last_analyze - Check the maximum time in seconds since any one table has been analyzed. last_autoanalyze - Check the maximum time in seconds since any one table has been autoanalyzed. last_autovacuum - Check the maximum time in seconds since ...
index_size - Checks the size of indexes only. last_analyze - Check the maximum time in seconds since any one table has been analyzed. last_autoanalyze - Check the maximum time in seconds since any one table has been autoanalyzed. last_autovacuum - Check the maximum time in seconds since ...
wal_writer_delay表示每隔此参数值的时间,wal日志缓冲区的数据就会被刷新。 checkpoint_timeout代表执行checkout的间隔时间。 max_wal_size和min_wal_size控制wal日志的大小。 # - Archiving - archive_mode = off # enables archiving; off, on, or always # (change requires restart) #archive_command = 'cp...
CHECKPOINT_WAIT: 等待checkpointer结束,没有该标志的话,发送完信号RequestCheckpoint函数就返回了。CHECKPOINT_CAUSE_XLOG: xlog超过max_wal_size触发的检查点 void RequestCheckpoint(int flags) { int ntries; int old_failed, old_started; /* * If in a standalone backend, just do it ourselves. */ if ...
table size before vacuum #autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze #autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum # (change requires restart) #autovacuum_vacuum_cost_delay = 20ms # default vacuum cost delay for # autovacuum,...
checking for block size... 8kB ··· ··· ··· config.status: linking src/include/port/linux.h to src/include/pg_config_os.h config.status: linking src/makefiles/Makefile.linux to src/Makefile.port 编译Postgres-XL [root@localhost postgres-xl]# make ...
...ERROR: requested length too large 03 测试lo_export函数导出数据表数据到文件 postgres=# select lo_export(test_lo.info...=# select * from test_lo; id | info ---+--- 1 | 16392 (1 row) 实际数据使用多条bytea记录存储在pg_largeobject...get_lo_size(oid) returns bigint volatile ...
mailbox_size_limit=0recipient_delimiter= +inet_interfaces=all inet_protocols=all # Virtual Mailbox Domain Settings virtual_alias_maps= pgsql:/etc/postfix/postgres_virtual_alias_maps.cf virtual_mailbox_domains= pgsql:/etc/postfix/postgres_virtual_domains_maps.cf ...
Major problem in the entries representation is its size. In the given example the key "a" is presented three times. In large branchy documents with long keys sizes of naive entries, the representation becomes unreasonably large. Both opclasses address this issue, but in slightly different ways...
\l+ List databases with size, tablespace, and description To get additional information on the space consumed by database tables and comments describing those tables, use\l+: postgres=# \l+ \x Expand/narrow table lists Use\x(X for eXpanded listing) to control whether table listings use a ...