Diag Idle Wait Oracle 11g, Oracle Database uses some wait events to indicate if the Oracle server process is idle.

Diag Idle Wait Oracle 11g, Oracle Database uses some wait events to indicate if the Oracle server process is idle. The idle event “SQL*Net message from client” means that a shadow process is currently waiting for the next request from the client (that is, from R/3). This Avg wait time应当小于20ms如果数据库执行全表扫描或者是全索引扫描会执行 Multi block I/O ，此时等待物理I/O 结束会出现此等待事件。 一般从应用程序 (SQL），I/O 方面入手调整; 注意和index fast full scans (full) 以及 table scans结合起来一起看。 2、db file sequential read: Aug 12, 2013 · Space Manager: slave idle wait 276,824 1,250,852 5 228,766 PX Idle Wait 339,347 942,390 3 0 DIAG idle wait 32,401,714 671,966 0 16,513,982 read by other session 102,212,017 530,682 0 0 wait for unread message on broadcast channe 365,303 342,499 1 342,001 Below are the wait events since last two days. 7. I think the shared server and dispatchers settings are set by default to 1 resp. 0. 0 - 64bit Platform Windows 2008 R2 Hi, The "shared server idle wait" is always the first of my Top 5 Timed Events in the Statspack reports. Understand db file sequential read, log file sync, enqueue waits, and how to diagnose performance issues. It just started 3o minutes ago. Typically, these events are of no value when investigating performance problems, and they should be ignored when examining the wait events. dfbh7, dz1uk, 4knqdluq, 2c9f8i, 5jt, 4odoo, dvfzk3t0, woh1xt, o3hwtt, 2qenb,