DB2 9 vs Oracle 10g Admin. Technology - IBM

DB2 Information Management동시성ANSI 분리 레벨 개요ANSI 분리 레벨Repeatable ReadRead StabilityCursor StabilityUncommitted Read잠금 영향결과집합에 영향을 미치는 모든 행들에 대해 트랜잭션이 마칠 때까지잠금을 보유(Any row that is referenced in any mannerto produce a result set is locked until thetransaction ends)실제적으로 검색된 모든 행들에 대해 트랜잭션이 마칠 때까지 잠금을보유(Any row that is actually retrieved to producethe result set is locked until the transaction ends)결과집합중현재참조되는행에대해서만cursor가이동하거나또는트랜잭션이 마칠 때까지 잠금을 보유(Only the row that iscurrently being referenced in that result set islocked until that cursor is repositioned or thetransaction ends)트랜잭션이 실행되는 동안 잠금을 확보하지 않음(No locking isdone on any records at any time during atransaction (with the exception of a dropped oraltered table which is not transactional anyway))DB2 9 vs Oracle 10g© 2008 IBM Corporation 86