Quick troubleshooting view
WordPress displays "Error when connecting to the database".
- Invalid MySQL identifiers
- MySQL server unavailable
- Saturated or corrupt base
- Check wp-config.php
- Check basic service
- Control the space and quotas
- Fix connection settings
- Restoring MySQL service
- Reveal a consistent basis if corruption confirmed
Contextual technician plan
Control DB_NAME, DZ_USER, DZ_HOST without exposing secrets.
“Check wp-config.php” should produce an observation that clearly confirms or rules out “Invalid MySQL identifiers”.
If the observation is normal, lower “Invalid MySQL identifiers” in the ranking and continue with the next distinct check.
If the observation is abnormal, keep the evidence and investigate “Invalid MySQL identifiers” first. Related action: Fix connection settings.
Check the host's status.
“Check basic service” should produce an observation that clearly confirms or rules out “MySQL server unavailable”.
If the observation is normal, lower “MySQL server unavailable” in the ranking and continue with the next distinct check.
If the observation is abnormal, keep the evidence and investigate “MySQL server unavailable” first. Related action: Restoring MySQL service.
Saturation can prevent MySQL from working.
“Control the space and quotas” should produce an observation that clearly confirms or rules out “Saturated or corrupt base”.
If the observation is normal, lower “Saturated or corrupt base” in the ranking and continue with the next distinct check.
If the observation is abnormal, keep the evidence and investigate “Saturated or corrupt base” first. Related action: Reveal a consistent basis if corruption confirmed.
Identify the correct connection errors.
“See the logs” should produce an observation that clearly confirms or rules out “Incorrect base host”.
If the observation is normal, lower “Incorrect base host” in the ranking and continue with the next distinct check.
If the observation is abnormal, keep the evidence and investigate “Incorrect base host” first.
Repeat the same validation test after the correction and confirm the original symptom is gone. Validate stability before closing the incident.
Before changing configuration, record the current value and a way back.
Ecstasy immediately to the host if the MySQL server is unavailable or if more than one site is affected.
WordPress displays "Error when connecting to the database".
Causes probables
- Invalid MySQL identifiers
- MySQL server unavailable
- Saturated or corrupt base
- Incorrect base host
- Resource limit achieved
Diagnostic étape par étape
- 1
Check wp-config.php
Control DB_NAME, DZ_USER, DZ_HOST without exposing secrets.
- 2
Check basic service
Check the host's status.
- 3
Control the space and quotas
Saturation can prevent MySQL from working.
- 4
See the logs
Identify the correct connection errors.
Solutions possibles
- Fix connection settings
- Restoring MySQL service
- Reveal a consistent basis if corruption confirmed
Ecstasy immediately to the host if the MySQL server is unavailable or if more than one site is affected.