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11G Highly Available Virtual IP (haip)
Highly Available Virtual IPStarting with Oracle RAC 11.2.0.2, Oracle has introduced Redundant Interconnect Usage feature to support IP failover. Oracle uses its ora.cluster_interconnect.haip resource ...
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ORACLE 11g 一次ORA-27125 Linux-x86_64 Error
ORACLE 11g 一次ORA-27125 Linux-x86_64 Error启动数据库报错如下：SQL> startupORA-27125: unable to create shared memory segmentLinux-x86_64 Error: 13: Permission deniedAdditional information: 589825Addi...
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转METALINK一篇文章（变量窥视）
Query using Bind Variables is suddenly slow This document is being delivered to you via Oracle Support's Rapid Visibility (RaV) process and therefore has not been subject to an independent technical ...
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EXPDP/IMPDP 中的并行度PARALLEL参数
如果设置 EXPDP parallel=4 必须要设置4个EXPDP文件，不然PARALLEL是有问题的，同时EXPDP会使用一个WORKER进程导出METADATA，其他WORKER进程会同时出数据，如果EXPDP作业很于250M 只会启动一个WORKER进程如果是5...
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RAC 学习记录
crsctl query crs activeversion 查看版本ocrconfig -showbackup auto 查看自动备份的目录ocrconfig -export /home/oracle/ocr.backup 逻辑ocr备份ocrconfig –import /shared/export/ocrback.dmp 逻辑恢复/or...
