On 10/08/12 1:39 PM, Daniel Serodio (lists) wrote:
3) Estimate the size of the transaction log
** We've got no idea how to estimate this, need advice **

postgres doesn't have a 'transaction log', it has the WAL (Write-Ahead Logs). These are typically 16MB each. on databases with a really heavy write load, I might bump the checkpoint_segments as high as 60, which seems to result in about 120 of them being created, 2GB total. these files get reused, unless you are archiving them to implement a continuous realtime backup system (which enables "PITR", Point in Time Recovery)



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john r pierce                            N 37, W 122
santa cruz ca                         mid-left coast



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