On 09/06/2015 12:34 PM, Joe Conway wrote: > To the extent that we want specific pg_controldata output in non-text > form, we should identify which items those are and provide individual > functions for them.
Well, I think it's pretty simple, let's take it down: # function pg_control_control_data() returning INT, TSTZ pg_control version number: 942 pg_control last modified: Thu 20 Aug 2015 10:05:33 AM PDT #function pg_catversion() returning BIGINT Catalog version number: 201409291 # have function for this, no? Database system identifier: 6102142380557650900 # not relevant, if we can connect, it's running Database cluster state: shut down # Do we have functions for all of the below? # if not I suggest virtual table pg_checkpoint_status # returning the below 17 columns # that would be useful even if we have some of them Latest checkpoint location: 0/1A1BF178 Prior checkpoint location: 0/1A1BF0D8 Latest checkpoint's REDO location: 0/1A1BF178 Latest checkpoint's REDO WAL file: 00000001000000000000001A Latest checkpoint's TimeLineID: 1 Latest checkpoint's PrevTimeLineID: 1 Latest checkpoint's full_page_writes: on Latest checkpoint's NextXID: 0/2038 Latest checkpoint's NextOID: 19684 Latest checkpoint's NextMultiXactId: 1 Latest checkpoint's NextMultiOffset: 0 Latest checkpoint's oldestXID: 711 Latest checkpoint's oldestXID's DB: 1 Latest checkpoint's oldestActiveXID: 0 Latest checkpoint's oldestMultiXid: 1 Latest checkpoint's oldestMulti's DB: 1 Time of latest checkpoint: Thu 20 Aug 2015 10:05:33 AM PDT # Not in any way useful Fake LSN counter for unlogged rels: 0/1 # add another system view, # pg_recovery_state, holding the # below 5 columns Minimum recovery ending location: 0/0 Min recovery ending loc's timeline: 0 Backup start location: 0/0 Backup end location: 0/0 End-of-backup record required: no # duplicates system settings, not needed Current wal_level setting: logical Current wal_log_hints setting: off Current max_connections setting: 100 Current max_worker_processes setting: 8 Current max_prepared_xacts setting: 0 Current max_locks_per_xact setting: 64 Maximum data alignment: 8 Database block size: 8192 # do we have the below anywhere else? # this is somewhat duplicative of config info Blocks per segment of large relation: 131072 WAL block size: 8192 Bytes per WAL segment: 16777216 Maximum length of identifiers: 64 Maximum columns in an index: 32 Maximum size of a TOAST chunk: 1996 Size of a large-object chunk: 2048 Date/time type storage: 64-bit integers Float4 argument passing: by value Float8 argument passing: by value # return INT function pg_data_page_checksum_version() Data page checksum version: 0 -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
