Too many backup archivelog

Hello guys,.

Now, I realized that my archivelog backup grow each backup. Today is Saturday, have no activity, and in addition, this database is small, but do not understand the reason for archivelog backups to be more and more each generated file...

-rw - r - 1 oracle oinstall 182M 13 Nov 15:45 arc_BD_20151113_422_1.arc

-rw - r - 1 oracle oinstall 176M Nov 13 16:45 arc_BD_20151113_424_1.arc

-rw - r - 1 oracle oinstall 176M 13 Nov 17:45 arc_BD_20151113_426_1.arc

-rw - r - 1 oracle oinstall 177M 13 Nov 18:45 arc_BD_20151113_428_1.arc

-rw - r - 1 oracle oinstall 155M 13 Nov 19:45 arc_BD_20151113_430_1.arc

-rw - r - 1 oracle oinstall 153M 13 Nov 20:45 arc_BD_20151113_432_1.arc

-rw - r - 1 oracle oinstall 153M 13 Nov 21:45 arc_BD_20151113_434_1.arc

-rw - r - 1 oracle oinstall 202M 13 Nov 22:45 arc_BD_20151113_436_1.arc

-rw - r - 1 oracle oinstall 168M 13 Nov 23:45 arc_BD_20151113_438_1.arc

-rw - r - 1 oracle oinstall 168M 14 November 00:19 arc_BD_20151114_440_1.arc

-rw - r - 1 oracle oinstall 168M 14 November 00:21 arc_BD_20151114_442_1.arc

-rw - r - 1 oracle oinstall 168M 14 November 00:23 arc_BD_20151114_444_1.arc

-rw - r - 1 oracle oinstall M 187, 14 November 00:45 arc_BD_20151114_446_1.arc

-rw - r - 1 oracle oinstall 232M 14 Nov 01:46 arc_BD_20151114_448_1.arc

-rw - r - 1 oracle oinstall 232M 14 Nov 02:46 arc_BD_20151114_450_1.arc

-rw - r - 1 oracle oinstall 232M 14 Nov 03:46 arc_BD_20151114_469_1.arc

-rw - r - 1 oracle oinstall 232M 14 Nov 04:47 arc_BD_20151114_471_1.arc

-rw - r - 1 oracle oinstall 232M 14 Nov 05:46 arc_BD_20151114_473_1.arc

-rw - r - 1 oracle oinstall 260M 14 Nov 06:46 arc_BD_20151114_475_1.arc

-rw - r - 1 oracle oinstall 260M 14 Nov 07:46 arc_BD_20151114_477_1.arc

-rw - r - 1 oracle oinstall 261M 14 Nov 08:46 arc_BD_20151114_479_1.arc

-rw - r - 1 oracle oinstall 261M 14 Nov 09:46 arc_BD_20151114_481_1.arc

and my archivelog files:

-rw - r - 1 oracle oinstall 2, 0K 13 Nov 15:19 arc_1_3185_827053996.arc

-rw - r - 1 oracle oinstall 309K Nov 13 15:23 arc_1_3186_827053996.arc

-rw - r - 1 oracle oinstall 1, 6M 13 Nov 15:45 arc_1_3187_827053996.arc

-rw - r - 1 oracle oinstall 6, 3 m Nov 13 16:45 arc_1_3188_827053996.arc

-rw - r - 1 oracle oinstall 6, 2M 13 Nov 17:45 arc_1_3189_827053996.arc

-rw - r - 1 oracle oinstall 6, 3 m 13 Nov 18:45 arc_1_3190_827053996.arc

-rw - r - 1 oracle oinstall 6, 1 M 13 Nov 19:45 arc_1_3191_827053996.arc

-rw - r - 1 oracle oinstall 6, 3 m 13 Nov 20:45 arc_1_3192_827053996.arc

-rw - r - 1 oracle oinstall 6, 5M 13 Nov 21:45 arc_1_3193_827053996.arc

-rw - r - 1 oracle oinstall 48M Nov 13 22:01 arc_1_3194_827053996.arc

-rw - r - 1 oracle oinstall 38M 13 Nov 22:02 arc_1_3195_827053996.arc

-rw - r - 1 oracle oinstall 43M 13 Nov 22:17 arc_1_3196_827053996.arc

-rw - r - 1 oracle oinstall 35M 13 Nov 22:45 arc_1_3197_827053996.arc

-rw - r - 1 oracle oinstall 12M 13 Nov 23:45 arc_1_3198_827053996.arc

-rw - r - 1 oracle oinstall 6, 3 m 14 November 00:18 arc_1_3199_827053996.arc

-rw - r - 1 oracle oinstall 53K 14 November 00:19 arc_1_3200_827053996.arc

-rw - r - 1 oracle oinstall 102K 14 November 00:21 arc_1_3201_827053996.arc

-rw - r - 1 oracle oinstall 198K 14 November 00:23 arc_1_3202_827053996.arc

-rw - r - 1 oracle oinstall 1, K 5, 14 November 00:23 arc_1_3203_827053996.arc

-rw - r - 1 oracle oinstall 44M 14 November 00:43 arc_1_3204_827053996.arc

-rw - r - 1 oracle oinstall 29M 14 November 00:45 arc_1_3205_827053996.arc

-rw - r - 1 oracle oinstall 48M 14 November 00:53 arc_1_3206_827053996.arc

-rw - r - 1 oracle oinstall 38M 14 Nov 01:02 arc_1_3207_827053996.arc

-rw - r - 1 oracle oinstall 44M 14 Nov 01:10 arc_1_3208_827053996.arc

-rw - r - 1 oracle oinstall 47M 14 Nov 01:45 arc_1_3209_827053996.arc

-rw - r - 1 oracle oinstall 6, M 7, 14 Nov 02:45 arc_1_3210_827053996.arc

-rw - r - 1 oracle oinstall 1, 1 M 14 Nov 03:00 arc_1_3211_827053996.arc

-rw - r - 1 oracle oinstall 4, 0M 14 Nov 03:23 arc_1_3212_827053996.arc

-rw - r - 1 oracle oinstall 1, 5M 14 Nov 03:45 arc_1_3213_827053996.arc

-rw - r - 1 oracle oinstall 6, 6M 14 Nov 04:45 arc_1_3214_827053996.arc

-rw - r - 1 oracle oinstall 6, 5M 14 Nov 05:45 arc_1_3215_827053996.arc

-rw - r - 1 oracle oinstall 38M 14 Nov 06:07 arc_1_3216_827053996.arc

-rw - r - 1 oracle oinstall 56M 14 Nov 06:45 arc_1_3217_827053996.arc

-rw - r - oinstall 1 oracle 8, 2M 14 Nov 07:45 arc_1_3218_827053996.arc

-rw - r - 1 oracle oinstall 6, 9M 14 Nov 08:45 arc_1_3219_827053996.arc

-rw - r - 1 oracle oinstall 6, 6M 14 Nov 09:45 arc_1_3220_827053996.arc

What is the problem?

So it's weird that there a redolog 4 times larger than the others, but this isn't really a problem.  Oracle is quite happy to do.

And while the size of the logs of recovery has a direct impact on the number of the archivelogs, it has no impact at all on the total space occupied by the archivelogs... It's strictly and completely a function of the amount of DML processed by the database.  What takes more space on your counter - pizza 14 inch cut into 12 slices or sliced into 6 14-inch pizza?

1. definitely, it would be causing the impact. If I don't have the optimum size of recovery logs, huge archives newspapers is generated for each small dml (turn LGWR hit with newspaper cheated)

If I have good because either he can TI still huge transaction number of the archives would be less.  OP is bothered by the number of archives.

Yes, I agree with DML activity, that nothing happens, maybe we should think about the sizing of newspapers for recovery whose impact on the performance of my db.

Refer to: Re: Redo log increase the size and performance (Hans response)

A post more: Re: archived redo log size less than online redo logs (JL)

I found another post from Hans... you will share

-Pavan Kumar N

Tags: Database

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