PRAGMAs cache_spill and cache_size - in the case of a large write transaction, the changes made to the database may exceed sqlite's configured memory cache.BEGIN IMMEDIATE can be useful to avoid wasted effort arising from contention here. starting a write transaction) will fail immediately if PENDING is already held, because there is no point waiting in this scenario. note this does not apply to all lock acquisitions - in particular escalating from SHARED to PENDING (ie.sqlite3_busy_timeout() which controls how long the library should transparently retry when encountering an SQLITE_BUSY error (aka "database is locked").Other mechanisms to consider in this area are: So if you want things to work smoothly, focusing on short transactions is a good rule of thumb. ![]() giving up and aborting the write transaction. The application itself is in control of this delay though, as it chooses how persistent it should be in acquiring the EXCLUSIVE lock vs. But it must have the EXCLUSIVE lock to safely update the main database file.Ī consequence of the locking protocol is that any long-running transaction performed by an app has the potential to cause read-transactions to fail with "Database is locked", because if a write-transaction comes in during the long-running transaction, everything else using the DB will ultimately have to wait for the long-running transaction to finish (so the write-transaction can commit its changes). This will fail if any read transactions are still active, so often a writer has to repeatedly retry at this point. Read transactions can no longer start once PENDING is acquired. This indicates that a transaction is ready to be committed. RESERVED does not affect read transactions. This indicates intent to write to the database and will fail if a concurrent write transaction is already in progress. The write-path escalates through these phases: the default) there can only be one writer at any time, but concurrent reads are still allowed until the writer is ready to commit its changes. (PS: I don’t know if it’s relevant, but I always get the “some indices were not available” when parsing the shared cache.It's more nuanced than that. What might be causing this error? It seems like I just need to delete a lockfile somewhere, but if I delete ~/.local/share/CCP/EVE/QtWebEngine/Default/File System/Origins/LOCK the whole launcher segfaults. ![]() Quota sqlite error 5, errno 0: database is locked, sql: INSERT INTO OriginInfoTable (last_modified_time, origin, type, last_access_time) VALUES (?, ?, ?, ?) SandboxOriginDatabase failed at: with error: IO error: /home/elassus/.local/share/CCP/EVE/QtWebEngine/Default/File System/Origins/LOCK: No further details. Quota sqlite error 5, errno 0: database is locked, sql: INSERT INTO OriginInfoTable (used_count, last_access_time, origin, type, last_modified_time) VALUES (?, ?, ?, ?, ?) Failed to delete the database: Database IO error SteamAPI_Init() failed unable to locate a running instance of Steam, or a local steamclient.so. SteamAPI_Init() failed SteamAPI_IsSteamRunning() failed. home/elassus/carrier0/launcher/evelauncher/qtwebengine_locales. ![]() Qt WebEngine locales directory not found at location home/elassus/carrier0/launcher/evelauncher/translations/qtwebengine_locales. However, after the migration the launcher fails to start any client with the following error: Installed Qt WebEngine locales directory not found at location I run gentoo, which recently implemented a migration of 32-bit library files (as far as I can tell it’s complicated and messy and I am a dirty casual with Linux).
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