方法一：
1.关闭postgres
/usr/local/pgsql/bin/pg_ctl stop -D /data/postgres/data
2.查询NextXID和NextOID
/usr/local/pgsql/bin/pg_controldata -D /data/postgres/data/
[postgres@mylinux]$ pg_controldata -D /data/postgres/data/
pg_control version number: 942
Catalog version number: 201510051
Database system identifier: 6625777092142108123
Database cluster state: shut down
pg_control last modified: Fri 17 May 2019 09:35:49 AM CST
Latest checkpoint location: 14/69000028
Prior checkpoint location: 14/68D758F8
Latest checkpoint's REDO location: 14/69000028
Latest checkpoint's REDO WAL file: 000000010000001400000069
Latest checkpoint's TimeLineID: 1
Latest checkpoint's PrevTimeLineID: 1
Latest checkpoint's full_page_writes: on
Latest checkpoint's NextXID: 0/13210704
Latest checkpoint's NextOID: 2553940
Latest checkpoint's NextMultiXactId: 1
Latest checkpoint's NextMultiOffset: 0
Latest checkpoint's oldestXID: 1820
Latest checkpoint's oldestXID's DB: 1
Latest checkpoint's oldestActiveXID: 0
Latest checkpoint's oldestMultiXid: 1
Latest checkpoint's oldestMulti's DB: 1
Latest checkpoint's oldestCommitTsXid:0
Latest checkpoint's newestCommitTsXid:0
Time of latest checkpoint: Fri 17 May 2019 09:35:48 AM CST
Fake LSN counter for unlogged rels: 0/1
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
wal_level setting: hot_standby
wal_log_hints setting: off
max_connections setting: 1000
max_worker_processes setting: 8
max_prepared_xacts setting: 0
max_locks_per_xact setting: 64
track_commit_timestamp setting: off
Maximum data alignment: 8
Database block size: 8192
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
Data page checksum version: 0
查到的NextXID和NextOID分别为13210704，2553940
3.删除pg_xlog
/usr/local/pgsql/bin/pg_resetxlog -o 2553940 -x 13210704 -f /data/postgres/data/
4.启动postgres
/usr/local/pgsql/bin/pg_ctl -D /data/postgres/data -l /data/postgres/log/pg_server.log start &
方法二：
删除00000001000000140000006F之前的日志
/usr/local/pgsql/bin/pg_archivecleanup . 00000001000000140000006F