Know more about Oracle Latches

Two purposes of latches were:Serialize Execution,Serialize Access Match the characteristics with latches and enqueues. Several modes of access 本文...

Know More About Oracle Row Lock

我们都知道在Oracle中实现了细粒度的行锁row lock,且在ORACLE的内部实现中没有使用基于内存的行锁管理器,row lock是依赖于数据块本身实现的。换句话说判定一行数据究竟有没有没锁住,要求Server Process去pin住相应的block buffer并检查才能够发现。 但是试想...

Know More about Oracle PGA Memory

Question :   1. How can we know available PGA and temporary tablespace before we issue a huge operation? 2. Can we estimate PGA and temporary tab...

Know more about Oracle Nologging

The NOLOGGING clause doesn't prevent redo on all operations, but rather only on a subset. I searched the documentation for examples of this... ht...

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