ORA-01034 ORACLE not availableCause: Oracle was not started. Possible causes include the following:The SGA requires more space than was allocated for it. The operating-system variable pointing to the instance is improperly defined. Action: Refer to accompanying messages for possible causes and correct the problem mentioned in the other messages. If Oracle has been initialized, then on some operating systems, verify that Oracle was linked correctly. See the platform-specific Oracle documentation.ORA-27101 shared memory realm does not existCause: Unable to locate shared memory realm.Action: Verify that the realm is accessible.
STARTUP
1. 环境变量没导全
2. oracle_sid没指定
The operating-system variable pointing to the instance is improperly defined.
Action: Refer to accompanying messages for possible causes and correct the problem mentioned in the other messages. If Oracle has been initialized, then on some operating systems, verify that Oracle was linked correctly. See the platform-specific Oracle documentation.ORA-27101 shared memory realm does not existCause: Unable to locate shared memory realm.Action: Verify that the realm is accessible.