QUERY 1: Check table size from user_segments. When you are connected to your own schema/user. select segment_name,sum(bytes)/1024/1024/1024 GB from user_segments where segment_type='TABLE' and segment_name=upper
Oracle UNDO Tablespace size & Table Size Table Space Query select SEGMENT_NAME,bytes/1024/1024,a.* from dba_segments a UNDO Table Space Size Full 数据库重启 SQL> shutdown abort ORACLE 例程已经关闭。 SQL> quit 从Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production With the...
其它的external table read、direct path write、PX Deq: read credit、PX Deq: Slave Session Stats这些就是占比重40的等待事件里的Top 4了。 --"Top 5 Timed Foreground Events"的局限性 再研究下这个Top 5 Timed Foreground Events,如果先不看Load Profile,是不能计算出一个CPU-Bound的工作负载。要知道系统C...
EXCLUDE和INCLUDE:此两参数互斥,使用格式为 EXCLUDE/INCLUDE=object_type[:name_clause],如exclude=TABLE:"LIKE 'EMP%'"或 直接exclude=index expdp susan/susan dumpfile=su.dmp exclude=SCHEMA:"='SAN'" --注意双引号要用斜杠转义 QUERY:如QUERY=OE.ORDER:"WHERE ORDER_ID > 1000000" SAMPLE:允许指定范围从...
常用的系统权限如下: CREATE SESSION:连接到数据库 CREATE TABLE:创建表 CREATE VIEW:创建视图 CREATE SEQUENCE:创建序列 对象权限 对象权限是指针对某个特定模式对象执行操作的权利,只能针对模式对象来设置管理对象权限,包括:表、视图、序列、存储过程等。
s.username user_name, s.fixed_table_sequence activity_meter, ''' query, 0 memory, 0 max_memory, 0 cpu_usage, s.sid, s.serial# serial_num from v$session s, v$process p where s.paddr=p.addr and s.type = ''USER'' order by s.username, s.osuser2)根据v.sid查看对应连接的资源占用...
CREATE TABLE http://download.oracle.com/docs/cd/E11882_01/server.112/e17118/statements_7002.htm#SQLRF01402 表空间(tableSpace) 段(segment) 盘区(extent) 块(block) 关系 一. Storage 参数说明 1. INITIAL Specify the size of the first extent of the object. Oracle allocates spac...
select index_name, column_name from user_ind_columns where table_name='&TABLE_NAME'; Query to check index size in Oracle select sum(bytes)/1024/1024 as "Index Size (MB)" from dba_segments where segment_name='&INDEX_NAME'; select sum(bytes)/1024/1024 as "Index Size (MB)" from user...
Power Query Desktop and Power Query Online provide a set of advanced options that you can add to your query if needed. The following table lists all of the advanced options you can set in Power Query Desktop and Power Query Online.
size(); List subList= list.subList(10, 20); 优点:编码简单,只需要一次SQL交互,总数据与分页数据差不多时性能较好。 缺点:总数据量较多时性能较差。 适应场景:数据库系统不支持分页处理,数据量较小并且可控。 2.1.3、数据库SQL分页 采用数据库SQL分页需要两次SQL完成 一个SQL计算总数量 一个SQL返回分页后的...