12.2 wait event ‘PGA memory operation’ 一客户报整个数据库sql运行缓慢,甚至执行不出来。 看了下会话,等待事件都是PGA memory operation,等待时间长达几百秒。 PGA memory operation等待事件在12.2开始引入,从字面上看是会话内存分配。 具体看了下等待事件原理。是在等待系统分配内存过程。理论上,一进程分配内存...
Oracle Database - Enterprise Edition - Version 18.0.0.0 and later: SQL's waiting on PGA Memory Operation Wait Event after upgrade to 18c from 11g
Another option is to set this value to a much higher value if there is enough physical memory in the server. Run below sql by logging in to sqlplus as agile database user: alter system set pga_aggregate_limit=10072M scope=both; Note: 3072M is just an example. Work with the DBA to ...
The Flash memory access time is adjusted to the CPU clock frequency (0 wait state from 0 to 24 MHz, 1 wait state from 24 to 48 MHz and 2 wait states above). 3.4 Embedded SRAM STM32F358xC devices feature up to 48 Kbytes of embedded SRAM with hardware parity 12/134 DocID025540 Rev...
2.2 Embedded SRAM The SPD1188 has implemented 64 KB SRAM memory for code and data. The SRAM can be accessed (read/write) at CPU clock speed with 0 wait states. 2.3 Embedded Flash memory Up to 128 KB of embedded Flash memory is available for storing programs and data. 2.4 Nested ...
up to 256KB Flash+48KB SRAM 4 ADCs, 2 DACs, 7 comp., 4 PGA, timers, 1.8 V operation Data brief Features ■ Core: ARM® 32-bit Cortex™-M4F CPU (72 MHz max), single-cycle multiplication and HW division, DSP instruction with FPU (floating-point unit) and MPU (memory protection...
Can be used to optimize operation of memory controllers or prefetchers. Connect from the slaves through AHB infrastructure. Connect to the slaves through the bus infrastructure. Name HADDRD[31:0] HTRANSD[1:0] Table 3-5 shows the signals for the DCode interface. Table 3-5 DCode interface...
12.2 wait event ‘PGA memory operation’ 2020-07-30 14:59 −... Nathan-wang 0 3214 【日记】12.2 2019-12-02 23:33 −# 12.2日记 今日主要复习&学习了一些基本的数据结构:树状数组,线段树,单调队列,单调栈,并做了一些简单例题。 # 树状数组 确实短小精悍。 **能做的事情:** - 单点修改+区间...
2.2.4 Memory CRC Calculation (Optional) The PGA460-Q1 implements a cyclic redundancy check (CRC) that is a self-contained algorithm to verify the integrity of the EEPROM stored data and threshold settings. When an EEPROM program or EEPROM-reload operation is executed, or when a threshold ...
7.3.6.2.1.3 Data Fields After the controller has transmitted the command field in the transmission frame, zero or more data fields are transmitted to the PGA460 device (write operation) or to the controller (read operation). The data fields can be raw memory data or a command related ...