What is the average size of an ERP database metadata?

 we can ballpark the space needed for metadata to be something between 50 to 150 GB.

SAP Does not use a separate file or a different database to store its meta-data like table definitions, data elements or even the ABAP code.

Instead, SAP uses the same database space to store its metadata too. Eg.

DD02L - Table that stores all available SAP TablesDD03L - Stores Table fields,DD04L - Stores Data Elements,

Not only this, whenever you keep a breakpoint in anyprogram, even that data is captured in database tables (ABDBG_BPS & ABDBG_INFO).

SAP ECC 6.0 Installation package along with Oracle database occupies around 50 GB including its Kernel and atleast 250 GB of hard disk space is needed to get this software up and running.

ABAP tables stored in REPOSRC

SAP Does not use a separate file or a different database to store its meta-data.

SAP Does not use a separate file or a different database to store its meta-data like table definitions, data elements or even the ABAP code.

It depends upon the company which uses SAP.

Well there is no certain answer for this question. Nevertheless, if ERP is based on SAP then there is no separate space for metadata except in HANA where temporary memory / on client storage act as metadata for sorting and table space.

If Oracle EBS system is implemented than again metadata will vary based on modules implemented for the sake of answer it varies between 40 MB to  Tera bit (in this case it's recommended to have cloud solution) :)

Regards,

Akbar 

for Initial stage 8 gb afterwards it can be increase

An SAP DB typically depends upon the size of the company it is imlemented in. After Go-Live the size can be anywhere between 300-1000GB

SAP Does not use a separate file or a different database to store its meta-data like table definitions, data elements or even the ABAP code.Instead, SAP uses the same database space to store its metadata too. Eg. DD02L - Table that stores all available SAP TablesDD03L - Stores Table fields,DD04L - Stores Data Elements,The source code of all ABAP programs are stored in as compressed RAW string in REPOSRC table.

It should be 100 to 200 GB on average.