1)oracle11g,在该视图中新增了WAIT_TIME_MICRO,TIME_REMAINING_MICRO,TIME_SINCE_LAST_WAIT_MICRO字段。而SECONDS_IN_WAIT已废弃,用 WAIT_TIME_MICRO and TIME_SINCE_LAST_WAIT_MICRO替代。 TIME_REMAINING_MICRO字段含义:为0表示当前等待超时;>0表示当前等待还需等待的时间;-1表示当前等待将无限制地等待;null表示...
WAIT_CLASS, TIME_WAITED_MICRO,ROUND(TIME_WAITED_MICRO*100/S.DBTIME,1) PCT_DB_TIME FROM VSYSTEMEVENTE,VEVENT_NAME N, (SELECT VALUE DBTIME FROM V Table 10-3 Latch Wait Event Latch SGA Area Possible Causes Look For: Shared pool, library cache Shared pool Lack of statement reuse Statement...
9i 中 waitstat的总次数基本等于buffer busy waits等待事件的次数 SQL> select sum(TOTAL_WAITS) from v$system_event where event='buffer busy waits'; SUM(TOTAL_WAITS) ———- 33070394 SQL> select sum(count) from v$waitstat; SUM(COUNT) ———- 33069335 10g waitstat的总次数基本等于 buffer busy...
接続プールのCNOWAIT値です。 CODE={ANSI_C | KR_C | CPP} KR_C 生成されるCコードの種類 COMMON_NAME=block_name * FORTRAN COMMONブロックの名前 COMMON_PARSER NO 共通のSQL・フロント・エンドを使用して解析します。 COMP5 YES COMP変数ではなくCOMP-5を生成します。 COMP_CHARSET={...
krsb_end: Begin stats dump for T-1.S-593 max number of buffers in use 10 Operation elapsed time (micro seconds) 474051333 File transfer time (micro seconds) 474051326 Network Statistics LOG_ARCHIVE_DEST_2 : OCI REQUEST Total count : OCI REQUEST 2748 Total time : OCI REQUEST 81374 Average...
Performance and Scalability ImprovementsNotable performance improvements include: Improvements and fixes toNUMA balancinghelp resolve issues that could cause high I/O wait times when this feature was enabled. NUMA balancing is automatically enabled on systems that have multiple NUMA nodes. ...
In this release, a commit for a replicated transaction that is using either TWOSAFE or RETURN RECEIPT will not observe any SQL query timeout setting. It will only return after the time indicated by the wait value configured in the replication scheme. (BugDB #25039883)2...
ENABLE_MICROSECOND Set it to O if you want to disable export of millisecond from Oracle timestamp columns. By default milliseconds are exported with the use of following format: 'YYYY-MM-DD HH24:MI:SS.FF' Disabling will force the use of the following Oracle format: to_char(..., 'YYYY...
And we can’t wait the 6 months it might take to change the application to prevent these scenarios from occurring or to make the application able to deal with the data spill or data “integrity” issue. Expanding on this point a little, we have many many Oracle applications. These are ...
time is spent: I/O served by storage cache, by spindles or by the effect of I/O outliers (for example: 1 long wait of 1 sec weighs as 1000 short waits of 1ms). For the purposes of this tool data for the intensity heat map is estimated from the same histogram data used for the ...