Oracle Database Administration, Performance Tuning, Backup Recovery
ORA-12155 :TNS received bad datatype

ORA-12155 TNS:Received bad datatype in NSWMARKER packet

Cause:    Internal error during break handling.
Action:    Not normally visible to the user. For further details, turn on tracing and reexecute the operation. If error persists, contact Worldwide Customer Support.

 
ORA-07582 : ORA_SID has illegal value

ORA-07582 is a typical Vax/VMS based instance startup error.  In a Vax/VMS based oracle system, the failure to set the correct ORACLE_SID or the failure to change the ORACLE_SID to the correct logical name will create an ORA-07582 Error.

 
Oracle Rep-159
Oracle Rep-159 is an internal error generated by oracle reports. Oracle Rep-159 is generated in multiple situations which cannot be documented in detail, but a few of the situations that I have run into are listed below..
 
ORA-00932 : Inconsistent Data Types
ORA-00932 error is typically caused due to an attempt by the program on incompatible data types. This error also happens when the user tries to perform operations that are not allowed, including operations by users on system tables that are not to be modified by the user.
 
ORA-01555 : Snapshot Too Old in Oracle
ORA-01555, Snapshot too old error in oracle indicates that something else other than your current process is creating the issue.  Oracle typically creates a read consistent view of the table so that it looks the same at the start and end of a sql operation. ORA-01555 indicates something has overwritten the undo area that keeps the data to maintain such a view.
 
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