ASM как
таковой мне нравится, но в администрирование занимает больше ресурсов. В
простых инстанциях его ат-инсталлировал.
Плюсы:
1. достаточно
большая пропускная способность, по сравнению с ЕХТ3, ЕХТ4 + АSYNC I/O. С АSYNC на 11.2.0.2 г версии есть проблемы.
2. ДБА трудно
удалить, сделать ошибку и удалить дата файлы.
3. ребаланс
данных возможен, по всем дискам.
4. возможно
использовать без RAID.
5. RAC и только в нем лучше использовать ASM, в Single instance насоветую, если только не хотите экономить на дисках и покупать дорогостоящий
массив.
6. В системах
где редко делают патчинг может и можно использовать.
Минусы:
1.Трудно администрировать,
делать UPGRADE, PATCHING итд. Каждый раз при смене KERNEL надо менять ASM libraries. Может если LINUX от ORACLE, может не так и
плохо, там всё включено, но у меня RHEL. У нас патчинг
каждый квартал. Соответственно надо тест, Preproduction,production upgrade. People ресурсов не напасёшься на ASM.
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