|Upgrade failed. Please consult the system logs for details. You will need to fix these problems, restore your database and confluence home directory to the pre upgrade state. Then retry the upgrade. Upgrade error message: Upgrade task com.atlassian.confluence.upgrade.upgradetask.PopulateLowerFieldsUpgradeTask@3dd836e2 failed during the SCHEMA_UPGRADE phase due to: StatementCallback; bad SQL grammar [drop index s_lspacekey_idx on SPACES]; nested exception is java.sql.SQLException: Cannot drop the index 'SPACES.s_lspacekey_idx', because it does not exist or you do not have permission.|
Your server id is: B0B7-71VE-QNWZ-PLH0
I'm testing upgrading v5.9.14 to v6.4.1 to no avail. Any hints why the SQL error is triggered?
The index s_lspacekey_idx is being introduced from Confluence 5.10 onwards so when the Confluence 6.4 upgrade trying to drop it, it will fail (as the index does not exist).
try this upgrade path: 5.9.14 > 5.10.8 > 6.4.1
this should be alright.
Note: You'll need to rollback to the working 5.9.14 first before upgrading again.
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