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? POSTGRES-XL: PostgreSQL-based open source extensible DB cluster The recent year the industry to the "IoE" more calls louder, many traditional enterprises have to go to the "IoE" program on the desktop. I always wonder what motivates these
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Github.com/lib/pq
PG is a pure go write driver of the Postgres database. The author gave us a little joke, the PQ will always be habitually written PG there is no ...
Description ORA2PG: Oracle PostgreSQL Database Mode Converter is a free tool for Oracle Database migration to PostgreSQL compatibility mode. It connects to the Oracle database, scans it to automatically extract its structure or data, and generates
BackgroundPostgreSQL logical backup, refers to online backup database data, DDL output as SQL statements, data can be in the form of SQL statements or fixed separators (row format) output.
The backup does not affect the DML operation of the Backup
0. Remove unnecessary tables and stored procedures from the 200 server Setup database
DROP TABLE "Sensorpressure";DROP FUNCTION hex_to_int (text);DROP FUNCTION "Pressuredatatosensorpressure" ();
1. Back up 200 of the SETUPD database,:p g_dump-d-H
Seven, Pg_dump:
Pg_dump is a tool for backing up the PostgreSQL database. It can even make a full, consistent backup when the database is being used concurrently, without blocking access to the database by other users. The dump format generated by
One. PostgreSQL has 3 types of logs, Pg_log (database run log), Pg_xlog (WAL log, redo log), Pg_clog (transaction commit log, transaction metadata logged)Pg_log is off by default and needs to be set to enable this log. Pg_xlog and Pg_clog are both
First, restore disk space:
In PostgreSQL, data rows that are deleted or updated using the Delete and UPDATE statements are not actually deleted, but only the state of the row is deleted or expired on the physical address of the old version of the
In Oracle, deleting a table or deleting a table record; There is a flashback feature that does not require a stop operation and can perfectly retrieve the record. There are, of course, some other recovery tools, such as ODU tools, Gdul tools. can
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