wait_event_type|wait_event |state |query |datid |datname |pid |leader_pid|usesysid|usename|application_name |client_addr |client_hostname|client_port|backend_start |xact_start |query_start |state_change |wait_event_type|wait_event |state |backend_xid|backend_xmin|query |backend_type | ...
selectwait_event_type,wait_event,state,query,a.*frompg_stat_activity awherequerylike'insert%'; wait_event_type|wait_event|state|query|datid|datname|pid|leader_pid|usesysid|usename|application_name|client_addr|client_hostname|client_port|backend_start|xact_start|query_start|state_change|wait_e...
/* Use MAXALIGN size/alignment to guarantee that later uses of memory are aligned correctly. E.g. epoll_event might need 8 byte alignment on some platforms, but earlier allocations like WaitEventSet and WaitEvent might not sized to guarantee that when purely using sizeof(). */ sz+=MAXALIGN...
wait_event text Event that the current thread is waiting for. For details, see Table 2. locktag text Information about the lock that the current thread is waiting for lockmode text Lock mode that the current thread is waiting to obtain block_sessionid bigint ID of the session that blocks...
本周话题 过去两周，Google旗下的DeepMind颇为引人瞩目，开发出了适用于关系推理的人工神经网络，从而让...
Wait Event occurrences per query; Wait Event occurrences per backend process; Wait Event occurrences per object; Context, at the moment historic tracking ofwait_type='LWLock', wait_event='LockManager'events is proven to be a complex and daunting task to identify and solve the saturation of LWLo...
=> SELECT * FROM aurora_stat_wait_event(); type_id | event_id | event_name ---+---+--- 1 | 16777216 | <unassigned:0> 1 | 16777217 | ShmemIndexLock 1 | 16777218 | OidGenLock 1 | 16777219 | XidGenLock . . . 9 | 150994945 | PgSleep 9 | 150994946 | RecoveryApplyDelay 10 |...
PGXC_WAIT_DETAIL视图显示集群中所有节点SQL的详细等待链信息。该视图仅8.1.3.200及以上集群版本支持。此时update操作会被阻塞。
id1, id2, lmode, request, typeFROMV$LOCKWHERE(id1, id2, type)IN(SELECTid1, id2, typeFROMV$LOCKWHERErequest>0)ORDERBYid1, request ; Systemwide Waits: Thecountandaverage wait timesforthis wait-event can be misleadingas"enqueue" waits re-arm every few seconds (see "Wait Time" above)...
The is equivalent to "when Node.js empties its event loop and has no additional work to schedule". Under those circumstances the best thing for the program to do is exit, otherwise it would have to killed at the process level. The reason for deadlock is always design and/or programmer ...