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Instance State & Internal Errors
Oracle Database Instance State & Internal Errors errors
The instance is not available, or an internal error was raised.
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ORA-01034
The Oracle instance is not available for use (ORACLE not available)
The instance is down, failed to start, or ORACLE_SID points to the wrong one.
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Other categories
Constraints & Integrity
4
SQL Syntax & Query Structure
7
Objects, Names & Identifiers
4
Data Types & Conversion
6
PL/SQL & Triggers
11
Locking, Transactions & Sessions
3
Logins, Accounts & Privileges
5
Space, Memory & Resource Limits
3
Connectivity & Listener
6