Common Oracle error codes

ORA-00001- Unique constraint violated. (Invalid data has been rejected)

ORA-00600- Internal error (contact support)

ORA-03113 End-of-file on communication channel (Network connection lost)

ORA-03114 Not connected to ORACLE 

ORA-00942 Table or view does not exist 

ORA-01017 Invalid Username/Password

ORA-01031 Insufficient privileges 

ORA-01034 Oracle not available (the database is down)

ORA-01403 No data found

ORA-01555 Snapshot too old (Rollback has been overwritten)

ORA-12154 TNS:could not resolve service name 

ORA-12203 TNS:unable to connect to destination

ORA-12500 TNS:listener failed to start a dedicated server 

Process

ORA-12545 TNS:name lookup failure

ORA-12560 TNS:protocol adapter error

ORA-02330 Package error raised with 

DBMS_SYS_ERROR.RAISE_SYSTEM_ERROR

Other error prefix codes

PLS-????? PL/SQL Error

IMP-????? Import error

EXP-????? Export error

MOD-????? SQL Module error

FRM-????? Oracle Forms error

SQL-Loader-??? SQL Loader error