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I am using CiviCRM wordpress version 5.12.3 - For some reason Civicrm_acl_contact_cache table got deleted

I am sure no one has Database access (apart from me). But still the table got deleted. Also, it wasn't fully deleted when I SSH the server I was able to view the table (even I couldn't dump the DB). so, I dropped it through SSH and created again.

I am not sure what triggered the table to drop in the database from front-end.

Has anyone faced the same issue before?

Thanks in advance
Ramesh Rajendran

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    Do you have plenty of disk space? I've seen weird things happen if you run out of disk space where MySQL stores it files. – Aidan Jul 2 '19 at 11:24
  • Yes, Server has 100 GB Free space and 64 GB RAM – Ramesh - ARTECH Consultancy Jul 2 '19 at 12:34
  • I have just recently seen the same phenomenon - just the column definitions where still there, the contents file for the table was missing. This seems to have happened overnight with no user activity. A backup was created after the last activity and before this happened and the table was apparently empty. Currently I am unsure, how to proceed. Would like to hear if you got any more infos. (Using Civi 5.17.5 on WP with separate db) – Joachim Oct 2 '19 at 12:12
  • @joachim I have given the answer in the question - you need to SSH and drop the table and create a new table - That should work - If you need more help let me know – Ramesh - ARTECH Consultancy Oct 3 '19 at 8:17
  • Thanks @Ramesh. While the database admin system of my hosting solution failed to even start, since the db was corrupted, it did indeed work accessing it directly and dropping/re-creating the table. However, I am still concerned about the fact that the database can even enter into this corrupted state. Currently, I have no idea what might be causing this - and apparently it is always the same table that gets impacted. – Joachim Oct 3 '19 at 18:30

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