Data Guard

How to Build Asymmetric Standby Database for Data Guard

Posted on
Asymmetric Data Guard Usually we build data guard environments with the symmetric architecture design on primary and standby servers, that is, single-instance to single-instance or RAC to RAC. Practically, we could have downgraded standby servers in hardware specifications. For example, we may use 16 cores per instance on the primary side but use 8 cores […]
Data Guard

How to Resolve Standby ORA-00600 [3020]

Posted on
ORA-00600 [3020] Found MRP shutdown with ORA-00600 [3020] in alert log of a standby database due to inconsistency of a newly created data file. Wed Nov 21 18:32:12 2018 Errors in file /oracle/admin/ORCL/bdump/orcl_mrp0_4589393.trc: ORA-00600: internal error code, arguments: [3020], [1786773511], [1], [37836], [320123], [72], [], [] ORA-10567: Redo is inconsistent with data block (file# 854, […]
Data Guard

ALTER SYSTEM ARCHIVE LOG CURRENT Hangs ?

Posted on
Since ALTER SYSTEM ARCHIVE LOG CURRENT is a synchronized fashion of switching redo logs, it has to synchronize the archive log completely to all archive log destinations including standby databases before returning the prompt to you. It could seem dead, but actually, the background process is transporting the archived log to standbys.If any one of the […]