The 22005 error code in PostgreSQL, labeled as error_in_assignment, typically arises during an assignment when a query attempts to store a result into a variable or column, and the result cannot be cast to the expected data type, often due to a NULL or inappropriate value. To diagnose and fix an error_in_assignment error, you should: …
The 21000 error code in PostgreSQL, known as cardinality_violation, occurs when a query returns a different number of rows than expected in a situation where only a single row is permitted. This can happen in various scenarios, such as when a subquery used as an expression returns more than one row, or when a UNION …
The ‘PostgreSQL out of memory’ error is a common issue that database administrators encounter when using PostgreSQL. This error indicates that the PostgreSQL service is unable to allocate the necessary amount of memory to execute a query or transaction. The reasons for this can vary from inefficient query design, insufficient system resources, to unexpected surges …
Managing read replicas in Aurora PostgreSQL involves understanding how replication lag can impact your database’s performance and determining the steps you should take if your replicas start falling behind. If you’re working with Amazon Aurora PostgreSQL and notice that your read replicas are lagging, it’s essential to take immediate action to ensure your database cluster …
When managing a database on Amazon Aurora with PostgreSQL compatibility, encountering a ‘disk full’ error can be a perplexing experience, especially if monitoring tools suggest there is available space. Such discrepancies often stem from misunderstandings about how storage is utilised and monitored within Aurora PostgreSQL environments. The ‘disk full’ error might appear if temporary files …
Optimising PostgreSQL performance is crucial for maintaining the efficiency and speed of your database operations. This relational database system, known for its robustness and flexibility, can handle a variety of workloads, from single machines to data warehouses or Web services with many concurrent users. However, as with any sophisticated system, PostgreSQL requires careful tuning to …
Encountering ‘out of memory’ errors during query execution in Aurora Postgres can be a disconcerting experience, often leading to performance degradation or unexpected downtimes. These errors indicate that your database instance’s memory is insufficient to handle the current workload. It’s crucial to tackle this problem methodically, beginning with an assessment of your database’s memory usage …
The 0Z000 error code in PostgreSQL is categorized under “Class 0Z — Diagnostics Exception.” This class of errors is related to diagnostic exceptions within PostgreSQL. However, the specific 0Z000 code is not standard, and there is no direct reference to it in the official PostgreSQL documentation or the provided search results. Typically, PostgreSQL error codes …
The 20000 error code in PostgreSQL, labeled as case_not_found, is associated with a CASE statement in which none of the conditions are met and there is no ELSE branch to handle such a scenario. This is a class 20 error which indicates a Case Not Found for Case Statement situation. To diagnose and fix this …
The error code 0Z002 in PostgreSQL, which corresponds to stacked_diagnostics_accessed_without_active_handler, indicates that there was an attempt to access stacked diagnostics when there was no active exception handler. This error is part of the SQLSTATE class 0Z which is for Diagnostics Exception errors. To diagnose and fix this error, you should ensure that you are trying …