标签：control 03 postgres 1Latest per checkpoint setting location
PostgreSQL控制文件内容：
主要分为是三部分，初始化静态信息、WAL及检查点的动态信息、一些配置信息。
我们可以用过pg_controldata命令直接读取PostgreSQL控制文件内容：
pg_controldata -D /usr/local/pgsql/data/
pg_control version number: 1201
Catalog version number: 201909212
Database system identifier: 7070399126203274461
Database cluster state: in production
pg_control last modified: 2022年03月03日 星期四 16时05分17秒
Latest checkpoint location: 0/30285A8
Latest checkpoint's REDO location: 0/3028570
Latest checkpoint's REDO WAL file: 000000010000000000000003
Latest checkpoint's TimeLineID: 1
Latest checkpoint's PrevTimeLineID: 1
Latest checkpoint's full_page_writes: on
Latest checkpoint's NextXID: 0:492
Latest checkpoint's NextOID: 24577
Latest checkpoint's NextMultiXactId: 1
Latest checkpoint's NextMultiOffset: 0
Latest checkpoint's oldestXID: 479
Latest checkpoint's oldestXID's DB: 1
Latest checkpoint's oldestActiveXID: 492
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: 2022年03月03日 星期四 16时05分14秒
Fake LSN counter for unlogged rels: 0/3E8
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: replica
wal_log_hints setting: off
max_connections setting: 100
max_worker_processes setting: 8
max_wal_senders setting: 10
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
Mock authentication nonce: 7caec5ec07a28b0960e4aa161a9b36f70c0b55de04b26e2e6ebc98148da72d5b
标签：control,03,postgres,1Latest,per,checkpoint,setting,location 来源： https://www.cnblogs.com/jinhao2/p/15961147.html
本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享； 2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关； 3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关； 4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除； 5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。