Not sure if such case would corrup the backup, but I won't make a backup just by copying the data directory. Use pg_basebackup instead, it's safer Regards, Alvaro Aguayo Operations Manager Open Comb Systems E.I.R.L. Office: (+51-1) 3377813 | Mobile: (+51) 995540103 | (+51) 954183248 Web: www.ocs.pe ----- Original Message ----- From: "Yashwanth Govinda Setty" <ygovindasetty@xxxxxxxxxxxxx> To: "PostgreSql-general" <pgsql-general@xxxxxxxxxxxxxx> Sent: Monday, 21 May, 2018 10:03:18 Subject: Will Altering and Modifying tables during backup result in a corrupted server after the restore? Hi All, We are trying this scenario: Here are the steps being done: 1. Creating a big table. Identify the physical file on the disk. 1. While backup process is backing up a file associated with the table - update the rows , add a column. 2. Restore the server with transaction logs We are backing up (copying) the entire postgres data directory. The database/table file being backed up (copied), is modified by running alter/update queries on the table. When we restore the copied data directory and replay/apply the transaction logs, will the server be restored to an healthy state? (The files modified during backup can be corrupted, will this affect the restore?) Thanks, Yashwanth ***************************Legal Disclaimer*************************** "This communication may contain confidential and privileged material for the sole use of the intended recipient. Any unauthorized review, use or distribution by others is strictly prohibited. If you have received the message by mistake, please advise the sender by reply email and delete the message. Thank you." **********************************************************************
