The database went down hard and we are trying to restart it.
We are seeing a message:
And the db does not start.
Release : 3.7.x
Release : 20.x
Component : IMSTOR
This means that there is a good epoch on each system, but they don’t match.
Use the force argument to try and start the db:
E.G. ./admintools -t start_db -d drdata -F
Last good epoch: 0xdeb93c ended at '2020-04-30 15:12:03.329844-04'
Last good catalog version: 0x1483430
AHM: 0xdeb93c ended at '2020-04-30 15:12:03.329844-04'
And note the number.
Choose #7 Advanced Menu
Choose #1 RollBack Database To Last Good Epoch
Choose the database in question
If the number it offers to roll back matches the number from the conversion, then that is the date of the available epoch. Say ok.
If there are problems utilizing the adminTools UI option in step 7 above, we can run the following command on the CLI of the DR DB to get around it.