%Total - Cluster Time as a percentage of Total Cluster Wait Time %Clu - Cluster Time as a percentage of Elapsed Time %CPU - CPU Time as a percentage of Elapsed Time %IO - User I/O Time as a percentage of Elapsed Time Only SQL with Cluster Wait Time > .005 seconds is reported Tota...
通过Elapsed/DB Time比较,反映出数据库的繁忙程度。如果DB Time>>Elapsed,则说明数据库很忙。 (4)DB Time 表示用户操作花费的时间,包括CPU时间和等待事件。通常同时这个数值判读数据库的负载情况。 具体含义 db time = cpu time + wait time(不包含空闲等待)(非后台进程) *db time就是记录的服务器花在数据库...
• Elapsed Time(S): SQL语句执行用总时长,此排序就是按照这个字段进行的。注意该时间不是单个SQL跑的时间,而是监控范围内SQL执行次数的总和时间。单位时间为秒 Elapsed Time = CPU Time + Wait Time • CPU Time(s): 为SQL语句执行时CPU占用时间总时长,此时间会小于等于Elapsed Time时间。单位时间为秒。
avg(execute_time) avg_exec_time, count(*) cnt, avg(execute_time - TOTAL_WAIT_TIME_MICRO ) avg_cpu_time, avg( TOTAL_WAIT_TIME_MICRO ) avg_wait_time, WAIT_CLASS, avg(retry_cnt) from v$OB_SQL_AUDIT group by 1 order by avg_exec_time * cnt desc limit 10; 最近100s某个租户的TOP ...
cpu_time_delta/1000000 cpu_time_delta_sec, elapsed_time_delta/1000000 elapsed_time_delta_sec, iowait_delta/1000000 iowait_time_delta_sec, ccwait_delta/1000000 concurrent_wait_delta_sec, clwait_delta/1000000 cluster_wait_delta_sec from dba_hist_snapshot st, dba_hist_sqlstat sql_st ...
time_remaining,sql_text from v$session_longops , v$sql where time_remaining <> 0 and sql_address = address and sql_hash_value = hash_value / 11、查看数据表的参数信息 SELECT partition_name, high_value, high_value_length, tablespace_name, ...
If automatic recovery is enabled, the member crash recovery will occur automatically when the database manager process model is started on any member (i.e., through a db2start command or by DB2 cluster services). If automatic recovery is not enabled, a manual member crash recovery must...
, ID_CLUSTER INT , ID_SLAVE INT ) ; CREATE TABLE R_TRANS_SLAVE ( ID_TRANS_SLAVE BIGINT NOT NULL PRIMARY KEY , ID_TRANSFORMATION INT , ID_SLAVE INT ) ; CREATE TABLE R_TRANS_CLUSTER ( ID_TRANS_CLUSTER BIGINT NOT NULL PRIMARY KEY ...
DELTA_ALTER_COLLATION_NOT_SUPPORTED_CLUSTER_BY 428FT The partitioning clause specified on CREATE or ALTER is not valid. DELTA_CANNOT_USE_ALL_COLUMNS_FOR_PARTITION PARTITIONS_ALREADY_EXIST PARTITIONS_NOT_FOUND 428GU A table must include at least one column that is not implicitly hidden. DELTA_EMPT...
Used frequently to sort the data retrieved from a table. It can be a good idea to cluster (physically sort) the table on that column, to save the cost of a sort operation every time the column is queried.Clustered indexes aren't a good choice for the following attributes:Columns...