Ok, thanks. On Sun 26 Aug, 2018, 10:46 AM Paul Carlucci, <paul.carlu...@gmail.com> wrote:
> There's a handful of hidden columns like Xmin and Xmax per row that you're > not accounting for, header info per page, reserve space, free space... The > physical size on disk is reasonable. > > Otherwise you can reduce the number of rows by cleaning up and moving out > old data, reduce the width of each row by getting rid of any unused columns > or switching to narrower data types, or drop unused indexes. If none of > that works for you then you're going to have to adjust your disk budget. > > On Sun, Aug 26, 2018, 12:37 AM Raghavendra Rao J S V < > raghavendra...@gmail.com> wrote: > >> Thank you very much for your prompt response. >> >> Please guide me below things. >> >> How to check rows got corrupted? >> >> How to check table got corrupted? >> >> How to check which row is occupied more space in the table? >> >> Is this expected? >> >> [image: image.png] >> >> On Sun, 26 Aug 2018 at 09:46, Adrian Klaver <adrian.kla...@aklaver.com> >> wrote: >> >>> On 08/25/2018 08:36 PM, Raghavendra Rao J S V wrote: >>> > Hi All, >>> > >>> > One of our database size is 50gb. Out of it one of the table has >>> > 149444622 records. Size of that table is 14GB and its indexes size is >>> 16GB. >>> > Total size of the table and its indexes are 30GB. I have perfomred the >>> > below steps on that table. >>> > >>> > reindex table table_name; >>> > >>> > vacuum full verbose analyze on table_name; >>> > >>> > But still the size of the table and its indexes size are not reduced. >>> > Please guid me. How to proceed further. >>> >>> Rough approximation: >>> >>> 14,000,000,000 / 150,000,000 = 93 bytes/record. >>> >>> I am not seeing an issue. If you want to reduce the size of the table >>> remove rows. >>> >>> >>> > >>> > Structure of the table as below. >>> > >>> > Column | Type | Modifiers | Storage | >>> > Stats target | Description >>> > >>> ---------------------+------------------+-----------+---------+--------------+------------- >>> > col1| bigint | | plain | | >>> > col2 | double precision | | plain | | >>> > col3| double precision | | plain | | >>> > col4| double precision | | plain | | >>> > col5| double precision | | plain | | >>> > col6date| date | | plain | | >>> > tkey | integer | | plain | | >>> > cid | integer | | plain | | >>> > rtypeid | integer | | plain | | >>> > rid | integer | | plain | | >>> > ckey | bigint | | plain | | >>> > Indexes: >>> > "idx_tab_cid" btree (cid) >>> > "idx_tab_ckey" btree (ckey) >>> > "idx_tab_col6date" btree (col6date) >>> > "idx_tab_rid" btree (rid) >>> > "idx_tab_rtype_id" btree (rtypid) >>> > "idx_tab_tkey" btree (tkey) >>> > >>> > >>> > -- >>> > Regards, >>> > Raghavendra Rao J S V >>> > Mobile- 8861161425 >>> >>> >>> -- >>> Adrian Klaver >>> adrian.kla...@aklaver.com >>> >> >> >> -- >> Regards, >> Raghavendra Rao J S V >> Mobile- 8861161425 >> >
