When migrating to Aurora PostgreSQL, you may encounter unexpected lock waits. Lock waits occur when a database session requires access to a data part that another session is using, leading to significant performance issues. Understanding and resolving these waits is crucial to maintaining the efficiency and speed of your database operations post-migration. Upon completing your …
In PostgreSQL, the management of transaction IDs is critical to ensure the reliability and consistency of your database. Each transaction is assigned a unique identifier known as a transaction ID (TXID), but due to their finite numerical space, there is a risk of exhausting the available numbers, leading to what’s called transaction ID wraparound. If …
When utilising PostgreSQL, it’s common to expect that indexes will optimise query performance by speeding up data retrieval. Yet, there are times when you might discover that an index you’ve created isn’t being used by the query executor, and it’s not immediately clear why. Understanding why PostgreSQL chooses not to use an index can be …
The 01P01 error code in PostgreSQL corresponds to a deprecated_feature warning. This warning is issued when you attempt to use a feature that has been marked as deprecated and is scheduled for removal in a future version of PostgreSQL. To diagnose and fix a 01P01 deprecated_feature warning, you should: Here’s an example scenario where you …
Working with JSONB data in PostgreSQL opens up a myriad of possibilities for storing and querying unstructured data within a relational database system. JSONB, which stands for JSON Binary, is a data type in PostgreSQL designed to store JSON (JavaScript Object Notation) documents in a more efficient binary format. This allows for sophisticated data retrieval …
The 01008 error code, indicating implicit_zero_bit_padding, is a warning in PostgreSQL that occurs when a bit string type is assigned to a column of type bit(n) and the string is shorter than the length of the column. PostgreSQL will implicitly pad the string with zeros to the right to match the specified length of the …
The dynamic_result_sets_returned error message in PostgreSQL is related to a specific SQLSTATE error code which indicates that a stored procedure attempted to return more result sets than were expected. This can occur when using a language like PL/pgSQL for writing stored procedures, which are expected to return a defined number of result sets, and the actual number …
When attempting to import data into PostgreSQL, encountering the “ERROR: invalid byte sequence for encoding” can be a significant hurdle. This error typically arises when the input data’s encoding does not match the expected encoding of the PostgreSQL database. As PostgreSQL expects UTF-8 encoded data by default, any non-conforming sequences within the data can trigger …
When managing a PostgreSQL database, encountering an ERROR: could not extend file message can be unsettling, raising concerns about data integrity and database functionality. This error typically indicates that PostgreSQL cannot grow a file on disk, often because the disk has run out of available space. As PostgreSQL processes transactions, it needs space to write …
Encountering an “ERROR: invalid page header in block” in a PostgreSQL database can be a distressing experience, particularly if you are responsible for the maintenance and integrity of a database. This error indicates that there is a corruption within a table’s data page, which may cause the PostgreSQL engine to abort the operation it is …