ORA-27500: inter-instance IPC error
ORA-27501: IPC error creating a port
ORA-27502: IPC error deleting OSD context
ORA-27503: IPC error attempting to cancel request
ORA-27504: IPC error creating OSD context
ORA-27505: IPC error destroying a port
ORA-27506: IPC error connecting to a port
ORA-27507: IPC error disconnecting from a port
ORA-27508: IPC error sending a message
ORA-27509: IPC error receiving a message
ORA-27510: IPC error waiting for a request to complete
ORA-27512: IPC error posting a process
ORA-27513: parameter string contains invalid value string
ORA-27542: Failed to unprepare a buffer prepared for remote update
ORA-27543: Failed to cancel outstanding IPC request
ORA-27544: Failed to map memory region for export
ORA-27545: Fail to prepare buffer for remote update
ORA-27546: Oracle compiled against IPC interface version string.string found version string.string
ORA-27547: Unable to query IPC OSD attribute string
ORA-27548: Unable to unprepare IPC buffer
ORA-27550: Target ID protocol check failed. tid vers=number, type=number, remote instance number=number, local instance number=number

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