Oracle Database Errors or Warnings from Error ORA-00820 to ORA-00830
ORA-00820: Specified value of sga_max_size is too small, needs to be at least stringM
Cause: The specified value of sga_max_size is too small for the SGA to accommodate all of the necessary SGA components such as the log buffer, buffer pools, shared pool, etc.
Action: Set sga_max_size to the recommended value or reduce the values of any SGA component size parameters you have specified.
ORA-00821: Specified value of sga_target stringM is too small, needs to be at least stringM
Cause: The specified value of sga_target is too small for the SGA to accommodate all of the necessary SGA components such as the log buffer, buffer pools, shared pool, etc.
Action: Set sga_target to the recommended value or reduce the values of any SGA component size parameters you have specified.
ORA-00822: MMAN process terminated with error
Cause: The Memory Management process died.
Action: Warm start instance
ORA-00823: Specified value of sga_target greater than sga_max_size
Cause: The specified value of sga_target is greater than sga_max_size.
Action: Increase sga_max_size to match up with sga_target or decrease sga_target to match up with sga_maxsize.
ORA-00824: cannot set SGA_TARGET or MEMORY_TARGET due to existing internal settings
Cause: Could not set SGA_TARGET or MEMORY_TARGET due to current parameter settings.
Action: Check the other error messages for additional information.
ORA-00825: cannot set DB_BLOCK_BUFFERS if SGA_TARGET or MEMORY_TARGET is set
Cause: SGA_TARGET or MEMORY_TARGET set with DB_BLOCK_BUFFERS set.
Action: Do not set SGA_TARGET, MEMORY_TARGET or use new cache parameters, and do not use DB_BLOCK_BUFFERS which is an old cache parameter.
ORA-00826: cannot set SGA_TARGET or MEMORY_TARGET for an ASM instance
Cause: SGA_TARGET or MEMORY_TARGET set for an ASM instance.
Action: Do not set SGA_TARGET or MEMORY_TARGET.
ORA-00827: could not shrink sga_target to specified value
Cause: Attempted to shrink the SGA to the specified value but did not succeed because the SGA components could not be shrunk as they were already at their minimum sizes.
Action: Do not set sga_target to a value below the current value without first shrinking the individual SGA components.
ORA-00828: specified value of shared_pool_reserved_size inconsistent with internal settings
Cause: Unable to set shared_pool_reserved_size to specified value if SGA_TARGET set, either because the specified value is too small, or because it is too large for the current internal size of shared pool. More details can be found in the alert log.
Action: If possible, do not set shared_pool_reserved_size without setting shared_pool_size if SGA_TARGET set. Examine the alert log for information about current internal size of shared pool, and valid range of values for shared_pool_reserved_size.
ORA-00830: cannot set statistics_level to BASIC with auto-tune SGA enabled
Cause: The user attempted to set statistics_level to BASIC with auto-tune SGA enabled which cannot be done because auto-tune SGA cannot work with statistics_level set to BASIC.
Action: Disable auto-tune SGA and try setting the statistics_level to BASIC again.
Above are list of Oracle Database Errors or Warnings from Error ORA-00820 to ORA-00830 received while performing certain operation against Oracle Database or related products.
What are Oracle Database Error Messages?
Oracle Error Messages may be returned while using products which are part of Oracle Database. Each Oracle Database Error or Warning Message mentioned above contains the Warning or Error Message Statement, a short explanation of the probable causes of the Error message, and a recommended action.
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Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.