Month: October 2022

Oracle Error TNS-12170: TNS:Connect timeout occurred

Oracle Error ORA-12560: TNS:protocol adapter error

Oracle Error ORA-03114: not connected to ORACLE

Oracle Error ORA-01034: ORACLE not available

Oracle Error ORA-02291: integrity constraint (string.string) violated – parent key not found

Oracle Error ORA-00942 : table or view does not exist

Oracle Error ORA-00904: string: invalid identifier

List of All Oracle Database Error Messages

Oracle Error ORA-00025: failed to allocate string

Oracle Error ORA-00024: logins from more than one process not allowed in single-process mode

Oracle Error ORA-00023: session references process private memory; cannot detach session

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Oracle Error ORA-00022: invalid session ID; access denied

Oracle Error ORA-00021 – session attached to some other process; cannot switch session

Oracle Error ORA-00020 – maximum number of processes(%s) exceeded

Oracle Error ORA-00018 – maximum number of sessions exceeded

Oracle Error ORA-00019 – maximum number of session licenses exceeded

Oracle Error ORA-00001 – unique constraint (string.string) violated

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