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How to resolve Clickhouse error code 241: Memory limit exceeded

Apr 14, 2023 · 2 min read · clickhouse database error handling ·
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In ClickHouse, executing large and complex queries or updating a significant amount of data, such as deduplicating a large table, may occasionally result in the following error: 1SQL Error [241] [07000]: Code: 241. DB::Exception: Memory limit (total) exceeded: 2would use 4.67 GiB (attempt to allocate chunk of 8388608 …

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How to resolve MySQL error 1206: The number of locks exceeds the lock table size.

Apr 12, 2023 · 3 min read · mysql error handling lock ·
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MySQL Error 1206 occurs when the number of requested locks exceeds the available lock table size. Why it happens This error usually occurs when executing a large update query. For example: Suppose we have a table called users that stores user information and contains a large number of records: 1MySQL …

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