# Class 08 — Connection Exception

> Members and evidence boundaries for PostgreSQL SQLSTATE class 08.
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# Class 08 — Connection Exception

## Shared meaning {#meaning}

The first two characters `08` identify `Connection Exception`. The client or server could not establish or keep a connection. A class gives a directory-level family; each member still needs its own message, transaction aftermath, and response evidence.

## Members {#members}

The locked catalogue contains 7 members in this class:

[`08000`](../../08000/), [`08001`](../../08001/), [`08003`](../../08003/), [`08004`](../../08004/), [`08006`](../../08006/), [`08007`](../../08007/), [`08P01`](../../08p01/)

## Version boundary {#versions}

Member links lead to their own versioned facts; consult the version pages and source evidence for exact presence and change boundaries.

## Sources {#sources}

Members are generated from `data/classes.json` and the locked SQLSTATE directory.