oracle 锁的研究二
从V$LOCK里面看到的lmode就是我们能从数据字典里,能看到的所有的锁类型一共有6种数字越大,锁的级别就越高0:none1:null 空2:Row-S 行共享(RS):共享表锁,sub share 3:Row-X 行独占(RX):用于行的修改,sub ex...
oracle 锁的研究一
acle 的锁从种类上分为2种 共享锁(share) ,排它锁(exclusive).从锁定的内容上,可以分为三大类:dml锁,ddl锁,内存锁(latch)其中dml 锁包括TM锁和TX锁,其中TM锁称为表级锁,TX锁称为事务锁或行级锁。在对数...
OCR integrity results are inconsistent amongst the nodes.
osLinux tsrac02 2.6.9-42.0.0.0.1.ELsmp #1 SMP Sun Oct 15 15:13:57 PDT 2006 x86_64 x86_64 x86_64 GNU/Linuxdb:oracle 10201安装rac 中间过程没有问题,到了最后一步检查没有通过,根据提示运行configToolAl...
CRS-0184: Cannot communicate with the CRS daemon.
问题描述:/oracle/crs/bin/crs_stat -t CRS-0184: Cannot communicate with the CRS daemon.方法/etc/init.d/init.crs stop Shutting down Oracle Cluster Ready Services (CRS):Stopping resources.Error ...
ges和gcs
GES and GCS have the memory structures associated with global resources. It is distributed across all instances in a cluster. This area is located in the variable or shared pool section of the SGA. As...
rac进程的学习1
LMS—Global Cache Service ProcessTo ensure that each Oracle RAC database instance obtains the block that it needs to satisfy a query or transaction, Oracle RAC instances use two processes, the Globa...
rac 资源分配问题
现在有个双节点的rac (rac1 ,rac2)没有设置parallel_instance_group 参数我在rac2节点上面,做任何操作,都会占用大量的rac1的cpurac2节点的资源占用却很少比如我在节点2上做一个查询,只消耗很少的节点2 的cpu...