SELECT
s.SID AS 会话ID,
p.spid AS"操作系统进程 ID",
s.SERIAL# AS 序列号,
s.USERNAME AS 用户名,
s.STATUSAS 状态,round(p.pga_used_mem/1024/1024/1024,2)AS"PGA 已使用内存(G)",round(p.pga_alloc_mem/1024/1024/1024,2)AS"PGA 已分配内存(G)",round(p.PGA_FREEABLE_MEM/1024/1024/1024,2)AS"PGA 可释放PGA内存(G)",round(p.PGA_MAX_MEM/1024/1024/1024,2)AS"PGA 最大PGA内存(G)",
s.MACHINE AS 机器名,
s.PROGRAM AS 程序名
FROM
V$SESSION s
JOIN v$process p ON s.paddr = p.addr
WHERE
s.USERNAME ='MJF';
查看 会话的等待事件
SELECT
SID AS 会话ID,
EVENT AS 事件,
WAIT_CLASS AS 等待类别,
SECONDS_IN_WAIT AS 等待秒数
FROM
V$SESSION_WAIT
WHERE
SID IN(SELECT SID FROM V$SESSIONWHERE USERNAME ='MJF');
查看 执行的 SQL 语句
SELECT
SQL_TEXT ASSQL文本,
EXECUTIONS AS 执行次数,
DISK_READS AS 磁盘读取次数,
BUFFER_GETS AS 缓冲区获取次数,
CPU_TIME AS CPU时间,
ELAPSED_TIME AS 总耗时
FROM
V$SQLAREA
WHERE
PARSING_USER_ID =(SELECT USER_ID FROM ALL_USERS WHERE USERNAME ='MJF');
查看系统资源限制
SELECT
RESOURCE_NAME AS 资源名称,
CURRENT_UTILIZATION AS 当前使用量,
MAX_UTILIZATION AS 最大使用量,
LIMIT_VALUE AS 限制值
FROM
V$RESOURCE_LIMIT;