I would like to copy databases from two different pg_basebackup backups to one lab environment database cluster on another server. Is it possible ?
It's a good idea to do it in that way.
Databases has your oid in pg_basebackup we can find it id in base directory for example:
base/
1
125859
14042
14043
2315410
2321461
2321462
2321463
Database OID (and directory name) we can find by :
SELECT oid from pg_database where datname = 'database name';
Steps:
create empty databases on destination server (database oid they will be probably different then on source databases)
stop Postgresql
cleanup destination directories eg. 2315410, 2321461, 2321462, 2321463
copy eg. content from pg_bassebackup01 base/(some OID) to 2315410 and 2321461
copy eg. content from pg_bassebackup02 base/(some OID) to 2321462 and 2321463
start postgresql
Is it a good or very bad idea ?
