Title: Database table problems causing 502 Error Last modified: November 16, 2020 --- # Database table problems causing 502 Error * [dunedude](https://wordpress.org/support/users/dunedude/) * (@dunedude) * [5 years, 6 months ago](https://wordpress.org/support/topic/database-table-problems-causing-502-error/) * Twice today, the nginx server reported a 502 error with a “Bad Gateway”. In both cases, I stopped and restarted the services to temporarily fix the problem. In the second time, I was able to access the main page but the 502 error returned when trying to access /wp-admin. * The system then reported a database table issue and asked me to allow it to try and automate its own repair. Here is the output from that attempt: * The wpkc_users table is okay. * The wpkc_usermeta table is not okay. It is reporting the following error: 1 client is using or hasn’t closed the table properly. WordPress will attempt to repair this table… Failed to repair the wpkc_usermeta table. Error: 1 client is using or hasn’t closed the table properly * The wpkc_posts table is not okay. It is reporting the following error: 1 client is using or hasn’t closed the table properly. WordPress will attempt to repair this table… Failed to repair the wpkc_posts table. Error: 1 client is using or hasn’t closed the table properly * The wpkc_comments table is not okay. It is reporting the following error: 1 client is using or hasn’t closed the table properly. WordPress will attempt to repair this table… Failed to repair the wpkc_comments table. Error: 1 client is using or hasn’t closed the table properly * The wpkc_links table is okay. * The wpkc_options table is not okay. It is reporting the following error: Table is marked as crashed. WordPress will attempt to repair this table… Failed to repair the wpkc_options table. Error: Table is marked as crashed * The wpkc_postmeta table is not okay. It is reporting the following error: 2 clients are using or haven’t closed the table properly. WordPress will attempt to repair this table… Failed to repair the wpkc_postmeta table. Error: 2 clients are using or haven’t closed the table properly * The wpkc_terms table is not okay. It is reporting the following error: 1 client is using or hasn’t closed the table properly. WordPress will attempt to repair this table… Failed to repair the wpkc_terms table. Error: 1 client is using or hasn’t closed the table properly * The wpkc_term_taxonomy table is not okay. It is reporting the following error: 1 client is using or hasn’t closed the table properly. WordPress will attempt to repair this table… Failed to repair the wpkc_term_taxonomy table. Error: 1 client is using or hasn’t closed the table properly * The wpkc_term_relationships table is not okay. It is reporting the following error: 1 client is using or hasn’t closed the table properly. WordPress will attempt to repair this table… Failed to repair the wpkc_term_relationships table. Error: 1 client is using or hasn’t closed the table properly * The wpkc_termmeta table is okay. * The wpkc_commentmeta table is not okay. It is reporting the following error: 1 client is using or hasn’t closed the table properly. WordPress will attempt to repair this table… Failed to repair the wpkc_commentmeta table. Error: 1 client is using or hasn’t closed the table properly * Some database problems could not be repaired. Please copy-and-paste the following list of errors to the WordPress support forums to get additional assistance. * wpkc_usermeta: 1 client is using or hasn’t closed the table properly wpkc_posts: 1 client is using or hasn’t closed the table properly wpkc_comments: 1 client is using or hasn’t closed the table properly wpkc_options: Table is marked as crashed wpkc_postmeta: 2 clients are using or haven’t closed the table properly wpkc_terms: 1 client is using or hasn’t closed the table properly wpkc_term_taxonomy: 1 client is using or hasn’t closed the table properly wpkc_term_relationships: 1 client is using or hasn’t closed the table properly wpkc_commentmeta: 1 client is using or hasn’t closed the table properly * ———————- * So, I’m asking for help on how to fix these problems. * Thanks. * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fdatabase-table-problems-causing-502-error%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ The topic ‘Database table problems causing 502 Error’ is closed to new replies. * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 0 replies * 1 participant * Last reply from: [dunedude](https://wordpress.org/support/users/dunedude/) * Last activity: [5 years, 6 months ago](https://wordpress.org/support/topic/database-table-problems-causing-502-error/) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics