A time-out occurred while waiting for buffer latch -- type 4, bp 000000097BFDEDC0, page 1:19239, stat 0xc00009, database id: 5, allocation unit Id: 72057615247867904, task 0x0000000005E594C8 : 0, waittime 300,
A time-out occurred while waiting for buffer latch -- type 4, bp 000000097BFDEDC0, page 1:19239, stat 0xc00009, database id: 5, allocation unit Id: 72057615247867904, task 0x0000000005E594C8 : 0, waittime 300, flags 0x1018, owning task 0x0000000000169DC8. Not continuing to wait. 我...
A time-out occurred while waiting for buffer latch -- type 4, bp 000000097BFDEDC0, page 1:19239, stat 0xc00009, database id: 5, allocation unit Id: 72057615247867904, task 0x0000000005E594C8 : 0, waittime 300, flags 0x1018, owning task 0x0000000000169DC8. Not continuing to wait. 我...
Date\Time SPID A time-out occurred while waiting for buffer latch -- type 4, bp 000000E66DA93540, page PageID, stat 0xb, database id: DatabaseID, allocation unit Id: UnitID, task TaskID...
from v$session_wait where event = 'latch free'; 如果要确定具体的热点块,就要查询v$latch_children,x$bh,dba_extents,根据子latch的信息确认热点块. v$latch_children.addr 与x$bh.hladdr相关联,可以确认子latch相关的块. 再根据x$bh.dbarfil与dba_extents.relative_fno和x$bh.dbablk与dba_extents.block_id&&...
A time-out occurred while waiting for buffer latch -- type 3… When this issue occurs, some orphaned buffer latches remain, and any operation such as DBCC CHECKDB, CHECKPOINTING, or BACKUP LOG fail. NoteIf you update to Cumulative Update 1 for S...
(Microsoft.SqlServer.ConnectionInfo) --- Time-out occurred while waiting for buffer latch type 3 for page (1:70873021), database ID 5. (Microsoft SQL Server, Error: 845) Please Note, I have already did, Empty file by migrating the data to other files in th...
1. 不够优化的SQL 大量逻辑读的SQL语句就有可能产生非常严重的latch:cache buffers chains等待,因为每次要访问一个block,就需要获得该latch,由于有大量的逻辑读,那么就增加了latch:cache buffers chains争用的机率。 (1)对于正在运行的SQL语句,产生非常严重的latch:cache buffers chains争用,可以利用下面SQL查看执行计...
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2. Buffer和latch不可用 原因的原因的原因:全表扫描、library cache latches数太多等。 视图:V$SYSTEM_EVENT (instance-level waits), V$SESSION_EVENT (session-level waits) 注意: 等待与共享池和缓冲池中的高命中率(high hit ratios)无关!换句话说,高命中率也会有长时间的等待。