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Oracle export 时expdp 表顺序每次不同的

同样的expdp 200张表,expdp 的命令一样,但是export log出来的表顺序也是不同的。

expdp parallel 4 impdp parallel 8  也是可以

File Size(MB)Export ElapsedImport ElapsedAKA
2865MB0:04:230:20:02imp disable constraint parallel 4(exp parallel 4)
5115MB0:03:080:21:10imp disable constraint parallel 4(exp parallel 4)
1914MB0:03:160:16:12imp disable constraint parallel 4(exp parallel 4)
5243MB0:03:550:21:36imp disable constraint parallel 4(exp parallel 4)
1921MB0:03:020:16:16imp disable constraint parallel 4(exp parallel 4)exp host 性能好imp host性能差不多
5243MB0:03:040:18:34imp disable constraint parallel 8(exp parallel 4)exp host 性能好parallel 加大有效果
Compress 7倍比例
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