Re: How to reduce WAL files in Point in time recovery

Hi,

I have setup PITR in PostgreSQL. I am taking base backup at every specific interval and also kept WAL files of size 16 MB each.   Now the situation is that even there is no any major change in database, it suddenly started creating too many WAL files.   I have gathered statistics with count of WAL files created on specific dates as shown below:   Date       | WAL file count -----------| ------------- 2016-08-31 |  1569 2016-08-30 |  3031 2016-08-29 |  2664 2016-08-28 |  1251 2016-08-27 |  1231 2016-08-26 |  1946 2016-08-25 |  1850 2016-08-24 |  1666 2016-08-23 |  1562 2016-08-22 |  1525 2016-08-21 |   765 2016-08-20 |   761 2016-08-19 |  1180 2016-08-18 |  1077 2016-08-17 |  1064 2016-08-16 |   832 2016-08-15 |   732 2016-08-14 |   402 2016-08-13 |   691 2016-08-12 |  1991 2016-08-11 |   465   here we are expecting normal count to be between 600 to 800 according to our database transactions. But in above statistics you can see major fluctuation in file counts. I do not understand where the problem is and how can I find the root cause of the problem ?

Also I would like to inform that few days back I had performed full vacuum on 2 or 3 tables which were having size of 3 to 4 GB. But I do not guess it is because of this vacuum.

So could you please provide me guidelines to get this problem solved ?