The searched case statement is the much more powerful cousin of the simple case statement. The searched case statement is like an if…then…else structure, and can be used to conditionally search and replace values using logical operators and multiple conditions. Let's look at an example: SELEC...
现在我想转换成case语句。 select sum(case when person_status_id in (3,4,6) then (select 1 as x, count(*) as cnt from PERSON w and w.UPDATED_ON> (sysdate-30) )v end) as Completed, sum(case when person_status_id in (5,7,13) then (select 1 as x, count(*) as cnt from P...
TheDryRunoption checks if reading data on the Oracle database can be parallelized across multiple fetchers and stops before loading any rows. If parallelizing the reads is possible,ttLoadFromOraclereturns success. Otherwise it returns an error. This option is not used by default. Valid values ar...
Next, he takes a look at the Memory Statistics and Garbage Collector panels, which show additional information about memory usage and the garbage collector, respectively. If necessary, Marcus can change some of the values from this tab; for example he could change the allocated Java heap size ...
This can happen very often when you create an object that have the same name as a public synonym. When SMON is trying to remove non-existent objects and fails because there are duplicates, multiple nonexistent objects with same name.
When a cell gets a Smart Scan-enabled query from the database node via iDB, it checks which regions of the storage will not contain the data. For instance if the query predicate states where rating = 3, a region on the disk where the minimum and maximum values of the column RATING ...
Less load on the Oracle Key Vault server when multiple sessions of a single database request the same master encryption key Improved scalability of Oracle Key Vault Parent topic: Persistent Master Key Cache 11.4.5.2 About Oracle Key Vault Persistent Master Key Cache Architecture The Oracle Key...
(一)kernel.shmall = 2097152 # kernel.shmall参数是控制共享内存页数。Linux 共享内存页大小为4KB,共享内存段的大小都是共享内存页大小的整数倍。 如果一个共享内存段的最大大小是16G,那么需要共享内存页数是 16GB/4KB = 16777216KB/4KB = 4194304(页),也就是64Bit系统下16GB物理内存, ...
var1 := go_ora.Clob{String: "large string value"} var2 := go_ora.Blob{Data: []byte("large []byte value")} _, err := conn.Exec("insert into tb values(:1, :2)", var1, var2)output parameters var { var1 go_ora.NClob var2 go_ora.Blob } // set size according to size ...
Oracle RAC Cluster (Single/Multiple Nodes, Automatic Storage Management, Oracle Cluster File System, Data Guard) Oracle RDBMS Server (Standard and Enterprise Editions) Oracle Retail (Retek) Oracle SQL*Plus/iSQL*Plus Oracle TimesTen In-Memory Database ...